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WO2018096430A1 - Optimisation automatique de signal tactile - Google Patents

Optimisation automatique de signal tactile Download PDF

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Publication number
WO2018096430A1
WO2018096430A1 PCT/IB2017/057201 IB2017057201W WO2018096430A1 WO 2018096430 A1 WO2018096430 A1 WO 2018096430A1 IB 2017057201 W IB2017057201 W IB 2017057201W WO 2018096430 A1 WO2018096430 A1 WO 2018096430A1
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WO
WIPO (PCT)
Prior art keywords
integration time
ambient light
samples
emitters
integration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2017/057201
Other languages
English (en)
Inventor
Tomas Christiansson
Henrik Wall
Nicklas OHLSSON
Mattias KRUS
Tomas Svensson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FlatFrog Laboratories AB
Original Assignee
FlatFrog Laboratories AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FlatFrog Laboratories AB filed Critical FlatFrog Laboratories AB
Priority to EP17873823.3A priority Critical patent/EP3545392A4/fr
Priority to US16/461,241 priority patent/US10761657B2/en
Priority to CN201780080010.2A priority patent/CN110100226A/zh
Publication of WO2018096430A1 publication Critical patent/WO2018096430A1/fr
Anticipated expiration legal-status Critical
Priority to US17/007,350 priority patent/US20210089164A1/en
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G06F3/04182—Filtering of noise external to the device and not generated by digitiser components
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04109—FTIR in optical digitiser, i.e. touch detection by frustrating the total internal reflection within an optical waveguide due to changes of optical properties or deformation at the touch location

Definitions

  • the present invention relates to a method and apparatus for reducing the effects of ambient light noise resulting from incident ambient light on an optical touch system.
  • Touch sensing systems are in widespread use in a variety of applications. Typically, the touch sensing systems are actuated by a touch object such as a finger or stylus, either in direct contact, or through proximity (i.e. without contact), with a touch surface. Touch sensing systems are for example used as touch pads of laptop computers, in control panels, and as overlays to displays on e.g. hand held devices, such as mobile telephones and interactive whiteboards. A touch panel that is overlaid on or integrated in a display is also denoted a "touch screen”. Many other applications are known in the art.
  • WO2010/064983 discloses a multi-touch system, which is based on frustrated total internal reflection (FTIR).
  • FTIR frustrated total internal reflection
  • Light sheets are coupled into a panel to propagate inside the panel by total internal reflection (TIR).
  • TIR total internal reflection
  • Arrays of light sensors are located around the perimeter of the touch surface to detect the received light for each light sheet and generate a signal value for each light path across the touch surface.
  • the signal values of the light sensors are normalized by respective reference values and input into an image
  • the touches need to be detected against a background of interferences, e.g. originating from fingerprints and other types of smear on the touch surface.
  • the influence of interferences may vary not only over time but also across the touch surface, making it difficult to properly detect the touches on the touch surface at all times.
  • WO2011/028169 proposes manipulating the reference values to compensate for the influence of contaminations in the attenuation pattern
  • W0201 1/049512 proposes tracking a two-dimensional background pattern of the contamination contribution and using the background pattern to generate an attenuation pattern that is compensated for contaminations.
  • Optical touch systems often need to be designed with a high sensitivity, since a touching object may result in only a small attenuation of the propagating light, e.g. less than 1 %. Certain systems may therefore be designed to detect attenuations on the order of 0.1 % - 0.01 %.
  • WO2011/078769 proposes monitoring the temporal variability of the signal values to identify potential causes for reduced performance of the touch system, e.g. due to component failure, and implementing corrective measures to account for unreliable signal values.
  • WO2013/115710 describes processing the output signal of an optical touch system to generate a set of data samples comprises ON energy values when the light signal is being transmitted and OFF energy value when no light signal is being transmitted. An estimated ambient value is determined from the OFF energy value. An ambient-compensated energy value is generated by subtracting an estimated ambient value from the ON energy value for each actual detection line.
  • this technique only provides significant improvements for light noise sources that are unmodulated (e.g. Sunlight) or modulated with a low frequency (e.g. Incandescent lamps). This technique provides poor results with respect to modulated noise sources like fluorescent lighting.
  • a first embodiment of the invention describes a method of operating an optical touch apparatus, the optical touch apparatus comprising: a panel (10), a plurality of emitters (30a, 31 a, 32a) and a plurality of detectors (30b, 31 b, 32b) arranged with respect to the panel, the plurality of detectors configured to receive light from the plurality of emitters thereby defining detection samples (D) of light transmitted between pairs of emitters and detectors, a controller coupled to the plurality of emitters to generate the signals and wherein each detector is configured to generate an output signal, the optical touch apparatus being configured to operate in a data sampling mode operating in a sequence of repetitions, each repetition comprising the steps of: turning the emitters ON and OFF according to a timing configuration during each repetition such that the output signal for each detector is generated to comprise ON energy values for the detection samples (D) and at least one OFF energy value, processing the output signals to generate a set of data samples, each data sample being generated to represent detected energy for one of the detection samples (D), and processing the set of data
  • the filter may be configured to generate a residual ambient light value indicative of ambient light in dependence on the difference between the second set of samples and the first set of samples.
  • the optimal residual ambient light value may correspond to the residual ambient light value having the lowest magnitude.
  • the first integration time may be the same length as the second integration time.
  • a first settling period may occur between the first integration time and the second integration time.
  • the ambient light evaluation mode may further comprising the steps of:
  • the touch apparatus is configured to operate in the data sampling mode with a timing configuration corresponding to the first, second, and third integration time of the determined the ambient light evaluation mode repetition.
  • the first integration time may be the same length as the third integration time.
  • a second settling period may occur between the second integration time and the third integration time.
  • the second integration time may correspond to the integration time of the ON signal
  • the first integration time corresponds to integration time of the OFF signal preceding the ON signal
  • the third integration time corresponds to integration time of the OFF signal following the ON signal.
  • the ambient light filter may be configured to generate a residual ambient light value indicative of ambient light in dependence on the difference between a signal sampled over the second integration time and an average of the signal sampled over the first integration time and the signal sampled over the third integration time.
  • the ambient light filter may be configured to generate a residual ambient light value indicative of ambient light in dependence on the difference between a signal sampled over the second integration time and a linear interpolation of the signal sampled over the first integration time and the signal sampled over the third integration time.
  • the steps of the ambient light evaluation mode may be performed once per frame, more than once per frame, or less often than every frame.
  • the ambient light evaluation mode steps may be performed at the beginning, middle or end of every frame.
  • the residual ambient light value may be determined for a plurality of the detectors of the touch apparatus and wherein the optimal residual ambient light value is determined as a function of the plurality of residual ambient light values.
  • the function may be an average or maximum of the residual ambient light values.
  • a total of number of different configurations of the first, second, and third integration times may be greater than 2 and wherein the apparatus being configured to cycle through the total of number of configurations in subsequent ambient light evaluation mode repetitions.
  • Preferably, between 1 and 10 configurations of the total number of configurations may be tested each frame.
  • the first second or third integration time may have a length of between 3ps to 30ps.
  • the first second or third integration times are changed in steps of between 0.1 ⁇ and 20MS each ambient light evaluation mode repetition.
  • the optimal residual ambient light value may also be selected as a function of the first and second integration times as well as the residual ambient light value.
  • the residual ambient light value exceeding a performance threshold value and having the shortest first and second integration times may be selected as the optimal residual ambient light value.
  • the system may be configured to not alter the first, second and third integration times used by the optical touch apparatus whilst operating in the data sampling mode whilst a touch interaction with the touch system is occurring.
  • a second embodiment of the invention describes An optical touch apparatus (100) comprising: a panel (10), a plurality of emitters (30a, 31 a, 32a) and a plurality of detectors (30b, 31b, 32b) arranged with respect to the panel, the plurality of detectors configured to receive light from the plurality of emitters thereby defining detection samples (D) of light transmitted between pairs of emitters and detectors, a controller coupled to the plurality of emitters to generate the signals and wherein each detector is configured to generate an output signal, the optical touch apparatus being configured to operate in a data sampling mode operating in a sequence of repetitions, each repetition comprising the steps of: turning the emitters ON and OFF according to a timing configuration during each repetition such that the output signal for each detector is generated to comprise ON energy values for the detection samples (D) and at least one OFF energy value, processing the output signals to generate a set of data samples, each data sample being generated to represent detected energy for one of the detection samples (D), and processing the set of data samples to detect an interaction with the panel
  • the touch apparatus is configured to perform the following steps: operating according to the ambient light evaluation mode for a plurality of repetitions, wherein the length of at least one of the first integration time and second integration time vary between repetitions, selecting the first integration time and/or second integration time that generated an optimal residual ambient light value, and operating the touch apparatus in the data sampling mode with a timing configuration corresponding to the selected first integration time and/or second integration time.
  • Figure 1 is a top plan view of a touch sensing apparatus with light beams.
  • Figure 2 is a side view of the apparatus in figure 1 in which light propagates from emitters to detectors by total internal reflection through a glass panel.
  • Figure 3 is a side view of the apparatus in figure 1 in which light travels from emitters to detectors along a path largely above a glass panel.
  • Figures 4a to 4e show a portion of the scan scheme sequence.
  • Figure 5 shows a signal detected at a single detector. An uncompensated signal with ambient disturbances and an uncompensated signal without ambient disturbances is shown.
  • Figure 6 shows typical power spectrum received by a detector with no ambient electrical light source present.
  • Figure 7 shows a typical ambient filter kernel.
  • Figure 11 shows a normalised ambient performance magnitude
  • Figure 12 shows typical power spectrum received by a detector with a compact fluorescent lamp light source present.
  • Figure 15 shows a normalised ambient performance magnitude with a compact fluorescent lamp light source present.
  • Figure 16 is a flow chart of an embodiment of the ambient light evaluation mode and data sampling mode.
  • Figure 17 is a flow chart of another embodiment of the ambient light evaluation mode and data sampling mode. Detailed Description of Example Embodiments
  • a “touch object” or “touching object” is a physical object that touches, or is brought in sufficient proximity to, a touch surface so as to be detected by one or more sensors in the touch system.
  • the physical object may be animate or inanimate.
  • An “interaction” occurs when the touch object affects a parameter measured by the sensor.
  • interaction strength is a relative or absolute measure of the degree of interaction.
  • the “interaction strength” may be represented as an "attenuation”.
  • interaction map or “interaction pattern” is a two-dimensional (2D) distribution of interaction strength across the touch surface, or a portion thereof. If the interaction is presented as attenuation, the interaction map/pattern is also denoted an
  • a "touch” denotes a point of interaction as seen in the interaction pattern.
  • a “frame” or “iteration” denotes a repeated event comprising an ambient light evaluation, data collection, and determination of touch data.
  • a "trace” is information about the temporal history of an interaction. Touches from an interaction detected in a sequence of frames, i.e. at different points in time, are collected into a trace.
  • Embodiments of the inventions relate to signal processing in relation to a touch- sensitive apparatus which is based on the concept of transmitting energy of some form across a touch surface, such that an object that is brought into close vicinity of, or in contact with, the touch surface causes a local decrease in the transmitted energy.
  • the apparatus may be configured to permit transmission of energy in one of many different forms.
  • the emitted signals may be any radiation or wave energy that can travel in and/or across the touch surface including, without limitation, light waves in the visible or infrared or ultraviolet spectral regions.
  • Example embodiments of the invention will be described in relation to a touch-sensitive apparatus 100, which is shown in Figures 1-3 and is based on the concept of transmitting the light through a glass panel via TIR (Total Internal Reflection) or transmission of the light above the touch surface.
  • the apparatus 100 operates by transmitting light across a panel 10, from light emitters 30a, 31a, 32a to light sensors or detectors 30b, 31 b, 32b.
  • the transmitted light illuminates a touch surface 20 from within the panel 10.
  • the panel 10 is made of solid material in one or more layers and may have any shape.
  • the panel 10 defines an internal radiation propagation channel, in which light propagates by internal reflections.
  • the propagation channel is defined between the boundary surfaces 5, 6 of the panel 10, where the top surface 5 allows the propagating light to interact with touching objects 7 and thereby defines the touch surface 20. This is achieved by injecting the light into the panel 10 such that the light is reflected by total internal reflection (TIR) in the touch surface 20 as it propagates through the panel 10.
  • TIR total internal reflection
  • the light may be reflected by TIR in the bottom surface 6 or against a reflective coating thereon. It is also conceivable that the propagation channel is spaced from the bottom surface 6, e.g. if the panel comprises multiple layers of different materials.
  • the apparatus 100 may be designed to be overlaid on or integrated into a display device or monitor.
  • the apparatus 100 allows an object 7 that is brought in contact with the touch surface 20 to interact with the propagating light at the point of touch. In this interaction, part of the light may be scattered by the object 7, part of the light may be absorbed by the object 7, and part of the light may continue to propagate in its original direction across the panel 10. Thus, the touching object 7 causes a local frustration of the total internal reflection, which leads to a decrease in the energy (or, equivalently, power or intensity) of the transmitted light.
  • the apparatus 100 allows an object 7 that is brought in contact with the touch surface 20 to interact with the light travelling above the surface of the panel at the point of touch on the panel. In this interaction, a portion of the light travelling above the surface of the panel will be interrupted by the object, which leads to a decrease in the energy (or, equivalently, power or intensity) of the transmitted light received at detectors downstream of the touching objects 7.
  • the emitters 30a, 31 a, 32a are distributed along the perimeter of the touch surface 20 to generate a corresponding number of light sheets inside or above the panel 10.
  • each emitter 31 a generates a beam of light that expands in the plane of the panel 10 while propagating in the panel 10.
  • Each beam propagates from one or more entry or incoupling points on the panel 10.
  • the detectors 31 b are distributed along the perimeter of the touch surface 20 to receive the light from the emitters 31 a at a number of spaced-apart outcoupling points on the panel 10.
  • the incoupling and outcoupling points merely refer to the position where the beam enters and leaves, respectively, the panel 10.
  • one emitter/detector may be optically coupled to a number of incoupling/outcoupling points.
  • figure 3 describes an embodiment in which a portion of the light emitted by emitters 32a is transmitted through transmissive panel 100.
  • the light exits transmissive panel 100 through touch surface 20 and is reflected by reflector surface 80 of edge reflector 70 to travel along paths 90a and 90b in a plane parallel with touch surface 20.
  • the light will then continue until deflected by reflector surface 80 of the edge reflector 70 at an opposing edge of the transmissive panel 100, wherein the light will be deflected back down through transmissive panel 100 and onto detectors 32b.
  • the emitters and detectors may be positioned to emit and receive light directly above the surface of the panel.
  • the light from emitters positioned below the panel may be directed around the edge of the panel by means of a light guide or other optical arrangement.
  • a corresponding arrangement may convey the light from above the surface of the panel to the detectors positioned beneath the panel.
  • the detectors 30b, 31 b, 32b collectively provide an output signal, which is received and sampled by a signal processor 130.
  • the output signal contains a number of sub-signals, also denoted "projection signals", each representing the energy of light emitted by a certain light emitter and received by a certain detector.
  • the signal processor 130 may need to process the output signal for separation of the individual projection signals.
  • the touch apparatus 100 is considered to define a grid of detection lines D on the touch surface 20, where each detection line D corresponds to a light propagation path from an emitter to a detector, as projected onto the touch surface 20.
  • the projection signals represent the received energy or power of light on the individual detection lines D. It is realised that the touching object 7 results in a decrease (attenuation) of the received energy on one or more detection lines D.
  • the signal processor 130 may be configured to process the projection signals so as to determine a distribution of attenuation values (for simplicity, referred to as an "attenuation pattern") across the touch surface 20, where each attenuation value represents a local attenuation of light.
  • the attenuation pattern may be represented in many different ways, e.g. as attenuation values arranged in a regular x-y-g rid, such as in an ordinary digital image, although other types of grids are conceivable, e.g. hexagonal patterns or triangular meshes.
  • the attenuation pattern may be further processed by the signal processor 130 or by a separate device (not shown) for touch determination, which may involve extraction of touch data, such as a position (e.g. x,y coordinates), a shape or an area of each touching object.
  • a "frame” denotes a repeated event starting with ambient light evaluation and data collection and ending with determination of touch data.
  • the signal processor 130 may be configured to process the projection signals so as to determine a property of the touching objects, such as a position (e.g. in an x,y coordinate system), a shape, or an area. This determination may involve a straight-forward triangulation based on the attenuated detection lines, e.g. as disclosed in US7432893 and WO2010/015408, or a more advanced processing to recreate a distribution of attenuation values (for simplicity, referred to as an
  • the attenuation pattern may be further processed by the signal processor 130 or by a separate device (not shown) for determination of a position, shape or area of touching objects.
  • the attenuation pattern may be generated e.g. by any available algorithm for image reconstruction based on projection signal values, including tomographic reconstruction methods such as Filtered Back Projection, FFT-based algorithms, ART (Algebraic
  • the attenuation pattern may be generated by adapting one or more basis functions and/or by statistical methods such as Bayesian inversion. Examples of such reconstruction functions designed for use in touch determination are found in WO2009/077962, WO201 1/04951 1 , WO2011/139213, WO2012/050510, and WO2013/062471.
  • the apparatus 100 also includes a controller 120 (also called a which is connected to selectively control the activation of the emitters 30a, 31a, 32a and, possibly, the readout of data from the detectors 30b, 31 b, 32b.
  • the signal processor 130 and the controller 120 may be configured as separate units, or they may be incorporated in a single unit.
  • One or both of the signal processor 130 and the controller 120 may be at least partially implemented by software executed by a processing unit 140.
  • the different emitters 30a, 31 a, 32a are activated in sequence within a frame, such that each individual emitter is activated separately, whereby the transmitted light energy can be measured at each detector that receives light from the activated emitter. Thereby, an energy value is measured for each detection line during the frame.
  • groups of emitters 30a, 31 a, 32a are activated concurrently, wherein each emitter is controlled to transmit a code by way of the emitted light such that the code identifies the respective emitter. Based on the transmitted codes, the energy measured by each detector in the light detection arrangement can be separated into energy values for each detection line.
  • Such an emitter activation scheme is denoted “multiplexing” and is further described in PCT publication WO2010/064983.
  • Embodiments of the invention utilise the energy values measured by the detectors 30b, 31 b, 32b while the emitters 30a, 31 a, 32a are OFF and ON.
  • an "ON value” denotes detected energy when a signal is conducted from the emitter to the detector
  • an "OFF value” denotes detected energy without a signal being conducted.
  • the OFF values are conventionally used for so-called ambient compensation, which aims at removing or at least suppressing signal components originating from ambient light and detector dark level, including any analog-to-digital conversion (ADC) offset.
  • Ambient light refers to light that is received by a detector while not originating from the emitters.
  • the ON/OFF activation scheme of the emitters may enable each detector to measure an OFF value one or several times during a frame. As described in WO2013115710A2, an ambient-compensated energy value each for detection line may then be obtained. The ON value or an average of ON values is recorded for each detection line, i.e.
  • the OFF values obtained during one or plural frames, are processed to generate a current estimate of the noise level for each individual detector, and hence for each detection line.
  • the ambient-compensated energy value of each detection line is then determined to be the difference between the ON value and OFF value.
  • the validation process may be designed to operate on the same data as the ambient compensation.
  • the noise estimate is continuously updated using the latest OFF values.
  • the noise estimate is given by an exponential forget estimation of the variance (standard deviation) of the OFF values.
  • the above technique was insufficient to handle ambient noise having a variety of different power spectra.
  • unmodulated or modulated light at low frequencies may be adequately addressed by the above technique, light modulated at a frequency higher than the frequency at which the emitters are turned ON and OFF is effectively unfiltered and may cause significant detrimental effects to performance of the touch system. Therefore, the following text describes a dynamic ambient light filter configured to respond to the characteristics of ambient light sources and filter to the ambient light source in an optimal way, taking into account restraints including touch accuracy, frame rate, and power usage.
  • Figures 4a-4e and figure 5 provide an example of the measurement of OFF and ON samples.
  • Figures 4a-4e show a portion of a scan scheme sequence in which a sequence of emitters are used to transmit a signal with rest periods in between.
  • Figure 5 shows an uncompensated signal 210 with ambient disturbances and uncompensated signal 200 without ambient disturbances.
  • Figure 5 shows a received signal at detector 30b' over a portion of the scan scheme sequence.
  • no signal is being transmitted by any emitter for a first period of time.
  • Figure 5 shows a corresponding received signal at detector 30b' over the first period of time marked AO.
  • emitter 30a' emits a signal for a second period of time.
  • Figure 5 shows a corresponding received signal at detector 30b' over the second period of time marked S'.
  • no signal is being transmitted by any emitter for a third period of time.
  • Figure 5 shows a corresponding received signal at detector 30b' over the third period of time marked A1 .
  • emitter 30a" emits a signal for a fourth period of time.
  • Figure 5 shows a corresponding received signal at detector 30b' over the fourth period of time marked S".
  • no signal is being transmitted by any emitter for a fifth period of time.
  • Figure 5 shows a corresponding received signal at detector 30b' over the third period of time marked A2.
  • Figure 6 shows typical power spectrum received by a detector with no ambient electrical light source present and no emitter turned on.
  • Figure 16 shows a flow chart for a system according to an embodiment of the present invention.
  • the flow chart shown in figure 16 may describe a sequence of steps performed by the optical touch System of the present invention in each frame.
  • the steps of the ambient light evaluation mode are performed once per frame.
  • the ambient light evaluation mode steps may be performed more than once per frame or once every number of frames.
  • the ambient light evaluation mode steps may be performed at the beginning, middle or end of every frame.
  • the ambient light evaluation mode steps are executed once per frame and at the start of every frame.
  • the optical touch system begins the frame in an ambient light evaluation mode. Whilst in the ambient light evaluation mode, the system executes the following steps:
  • a sample AO is recorded over a first integration time from a single detector 30b'.
  • a sample S' is recorded over a second integration time, subsequent to the first integration time, from detector 30b'.
  • a sample A1 is recorded over a third integration time, subsequent to the second integration time, from detector 30b'.
  • An ambient light filter function is applied to samples AO, A1 and S' to generate a residual ambient light value.
  • 6 - (Repeat at least once) Modify the length of the first, second, and/or third integration time and repeat steps 1-5.
  • 7 - Determine the filter configuration in the memory having the optimal residual ambient light value.
  • a sample AO is recorded over a first integration time from a single detector 30b'.
  • the sample AO may be a single data value recorded from a detector over the first integration time.
  • the first integration time describes a period of time over which an analogue filtering and/or integration of the received signal is generated.
  • AO may be a series of data samples.
  • a sample S' is recorded over a second integration time, subsequent to the first integration time, from detector 30b'.
  • the sample S' may be a single data value recorded from a detector over the second integration time.
  • the second integration time describes a period of time over which an analogue filtering and/or integration of the received signal is generated.
  • S' may be a series of data samples.
  • a settling time is used between the first integration time and second integration time in order to minimise distortions resulting from the rise and/or fall times of the emitter and detector components between the first integration time and second integration time.
  • the same settling time is used between the second integration time and third integration time as that used between the first integration time and second integration time.
  • a sample A1 is recorded over a third integration time, subsequent to the second integration time, from detector 30b'.
  • the sample A1 may be a single data value recorded from a detector over the third integration time.
  • the third integration time describes a period of time over which an analogue filtering and/or integration of the received signal is generated.
  • A1 may be a series of data samples.
  • a plurality or all of the detectors are sampled and an average of the sampled values is used for each of AO, A1 , and S'.
  • An ambient light filter function is applied to samples AO, A1 and S' to generate a residual ambient light value.
  • the ambient light filter function calculates the residual ambient light value according to the following equation:
  • A Average of AO and A1
  • Residual ambient light value Magnitude of difference between A and S.
  • the ambient light filter function calculates the residual ambient light value according to a linear interpolation of AO and A1 evaluated at the centre of S'. If S' is a collection of data samples, S' may be digitally integrated and normalised by the number of samples in S' to generate S.
  • the ambient light filter function may be executed on signal processor 12.
  • Other digital filters as known in the art may be used.
  • Figure 7 shows a typical ambient filter kernel.
  • the ambient filter kernel is applied to the samples recorded at a detector 30b'.
  • Settling times are used in which samples are set to 0 in order to minimise distortions resulting from any signal changes between the first integration time and second integration time.
  • Detector and emitter components typically have a rise and fall time in which output or detection stabilises to a correct value.
  • Figure 8 is a Fourier transform of the ambient filter kernel shown in figure 7, wherein N is the number of digitally accumulated samples used for each of the first, second, and third integration times and P is the number of samples used during the settling times.
  • the ADC in this example is running at 2.5 MHz, i.e. each data sample is 0.4 microseconds long.
  • the left side lobe of figure 8 shows that low frequency components are somewhat filtered by filter. At the first singularity, frequencies are not filtered at all. The multiple lobes on the right of the graph at the higher frequencies are a result of the settling times used in between the integration times.
  • the data may be stored in a datastore on signal processor 120.
  • Each filter configuration comprises a first integration time, a second integration time, a third integration time and a residual ambient light value.
  • steps 1 -3 are repeated a multiple number of times using the same first, second, and third integration times, with the recorded residual ambient light value being the average value of the residual ambient light values calculated each repetition.
  • the first integration time, second integration time, and third integration time are all of the same length.
  • both the first and third integration time may be the same length whilst varying in length in proportion to the second integration time. For example, if the first and third integration time are made longer by 5%, the second integration time is made longer by 5% also.
  • the length of the first, second, and third integration times may all be varied independently of each other.
  • the number of repeats of steps 1 -4 may be chosen in dependence on the number of different residual ambient light values that are needed.
  • a number of different configurations of the first integration time and second integration time are tested to determine an optimal residual ambient light value.
  • the number of configurations may be between 5 and 5000.
  • 3 configurations of 300 possible configurations are tested each frame. This way, all configurations of the first integration time and second integration time may be tested over 100 frames. For an optical touch system operating at 120 frames per second, this allows all 300 configurations to be tested in under a second. Once all 300 configurations have been tested, the system preferably restarts the cycle. This allows the optical touch system to rapidly react to changes in the ambient lighting conditions.
  • Figure 11 shows a normalised ambient performance magnitude with no significant ambient light noise.
  • the normalisation is achieved by dividing the value by the integration time to compensate for the fact that the actual signal becomes higher when more samples are accumulated. In figure 11 , where the number of
  • the residual ambient light value of each filter configuration may be formed from an averaging of residual ambient light values over a number of cycles.
  • the residual ambient light values of a particular filter configuration may be calculated as the average of the residual ambient light values of the filter configuration of the previous three cycles. As this average is for samples taken at different times with respect to the ambient noise, the samples are more likely to be recorded at different phases of the modulated ambient noise, reducing the effect and likelihood of aliasing between the high-frequency component of the lamp and the ambient filter kernel. Doing an average over several values make sure that the difference in phase between lamp and filter gets averaged.
  • the system is configured to test a second integration time over a range of 6ps to 30ps, and incremented in steps of between 0.4 ⁇ and 20 ⁇ .
  • the length of the settling times can be varied in a similar manner to the first, second, and third integration times.
  • the system is configured to review the filter configurations stored in the datastore to determine an optimal filter configuration.
  • the optimal filter configuration is determined to be the filter
  • FIG. 12 shows typical power spectrum received by a detector with a compact fluorescent lamp light source present. We can see that the lamp has a very strong modulation frequencies around 45 kHz, including overtones at 90, 135, 180, 225, 265 kHz.
  • the 45 kHz peak lies between the main lobe and the first side lobe.
  • the 90 kHz peak also lies between two side lobes. This means that the ambient filter is very good at reducing the ambient residual error from this lamp.
  • Figure 15 shows a normalised ambient performance magnitude with a compact fluorescent lamp light source present.
  • N ⁇ 25 we see that the 45 kHz peak become amplified by the filter since it falls within the region where the frequency response of the filter is greater than 1.0, see new figure.
  • the integration time increases we see that we have an optimal alignment between power spectral density of the current lamp and ambient filter response when N is around 44.
  • the optimal filter configuration may also be selected as a function of the first and second integration times as well as the residual ambient light value.
  • a threshold value 300 exists wherein all filter configurations having a residual ambient light value below the threshold qualify as suitable candidates for usage, i.e. The touch accuracy of the optical touch system when operating according to the first and second integration times of each of the candidates filter configurations is likely to be adequate.
  • the system may therefore select which filter configuration to use in dependence on characteristics other than the residual ambient light values.
  • the filter configuration having the shortest first and second integration times may be selected in order to allow the optical touch system to perform at the fastest frame rate in order to reduce touch latency.
  • the frame rate is maintained at a standard rate (e.g.
  • the filter configuration having the shortest first and second integration times may be selected in order to allow the touch system to operate using the lowest power consumption possible.
  • the system may select between a value of N at 44 for optimal performance, or N at 29 for shortest sampling periods (for optimal power consumption or shortest frame length).
  • the system is configured to activate each of the emitters 30a in sequence, whereby the transmitted light energy can be measured at each detector that receives light from the activated emitter. Thereby, an energy value is measured for each detection line during the frame.
  • the system is configured to activate each emitter ON for a period of time corresponding to the second integration time.
  • the period of time for which the emitter is activated ON is typically slightly longer (e.g. 1-20MS) than the second integration time to allow for rise and/or fall times of the emitter and detector.
  • the system generates an ON sample value at each detector over the second integration time.
  • the system is then configured to ensure that all emitters are OFF for a period of time corresponding to the first/third integration times between ON activations.
  • the system generates an OFF sample value at each detector over the first integration time.
  • a settling time is used between the ON and OFF periods corresponding to the rest period used between the sampling periods of the ambient light evaluation mode.
  • An ambient-compensated energy value of each detection line is then determined to be the difference between the ON sample value and an average of the OFF sample value preceding the ON sample value and the OFF sample value recorded after the ON sample value.
  • ambient-compensated energy value of each detection line may be determined according to a linear interpolation of AO and A1 evaluated at the centre of S'.
  • the system is configured to activate each emitter ON for a period of time corresponding to but shorter than the second integration time.
  • the period of time for which the emitter is activated ON is slightly shorter (e.g. 1-20 ⁇ ) than the second integration time to allow for sampling the complete pulse including the rise and/or fall time of the pulse.
  • the length of the first, second and third integration times affect the length of the frame, as the longer the first, second and third integration times are, the longer it takes to complete activation of all the emitters and the interspaced OFF periods.
  • the frame comprises a period of time reserved as slack, so that the variation of the first, second and third integration times does not require the frame length to be altered.
  • the third integration time can be reused as the first integration for the next detection line recorded for the same single detector.
  • the system is configured to not alter the first, second and third integration times used by the optical touch system whilst in the data sampling mode whilst a touch interaction with the touch system is occurring.
  • the results of the ambient light evaluation mode can be disregarded or postponed for use until the touch interaction has finished.
  • the main difference is that the signal captured during the ON period comes from several emitters.
  • the ambient reduction filter works in the same way as for non- multiplexing systems. In a multiplexing system there is an extra de-multiplexing step between ambient compensation and the transmission/interpolation/reconstruction steps.
  • Figure 17 shows a flow chart for a system according to a simpler variation of the embodiment shown in figure 16 in which two samples are recorded instead of three. According to this embodiment, the system executes the following steps whilst in ambient light evaluation mode:
  • a sample AO is recorded over a first integration time from a single detector 30b'.
  • a sample S' is recorded over a second integration time, subsequent to the first integration time, from detector 30b'.
  • An ambient light filter function is applied to samples AO and S' to generate a residual ambient light value.
  • a sample AO is recorded over a first integration time from a single detector 30b' substantially as described in the previous embodiment.
  • a sample S' is recorded over a second integration time, subsequent to the first integration time, from detector 30b' substantially as described in the previous embodiment.
  • An ambient light filter function is applied to samples AO and S' to generate a residual ambient light value.
  • the ambient light filter function calculates the residual ambient light value according to the following equation:
  • Residual ambient light value Magnitude of difference between A and S.
  • the data may be stored in a datastore on signal processor 12.
  • Each filter configuration comprises a first integration time, a second integration time, and a residual ambient light value.
  • steps 1 -4 (Repeat at least once) Repeat steps 1 -4 whilst modifying the length of the first integration time and/or second integration time.
  • the first integration time and second integration time are the same length.
  • both the first integration time and second integration time are varied in length in proportion to each other. For example, if the first integration time is made longer by 5%, the second integration time is made longer by 5% also.
  • the length of the first integration time may be varied independently of the length of the second integration time.
  • the length of the second integration time may be varied independently of the length of the first integration time.
  • the number of repeats of steps 1 -4 may be chosen in dependence on the number of different residual ambient light values that are needed.
  • the optimal filter configuration may also be selected as a function of the first, second and third integration times as well as the residual ambient light value.
  • the system is configured to activate each emitter ON for a period of time corresponding to the second integration time.
  • the system generates an ON sample value at each detector over the second integration time.
  • the system is then configured to ensure that all emitters are OFF for a period of time corresponding to the first integration time between ON activations.
  • the system generates an OFF sample value at each detector over the first integration time.
  • a settling time is used between the ON and OFF periods corresponding to the rest period used between the sampling periods of the ambient light evaluation mode.
  • An ambient- compensated energy value of each detection line is then determined to be the difference between the ON sample value and OFF sample value.
  • the touch determination process and the validation process may be implemented by a data processing device which is connected to sample measurement values from the detectors 30b, 31 b, 32b.
  • the device 140 may include an input for receiving the output signal.
  • the device 140 may further include a data collection element (or means) for obtaining the current projection values, a generation element (or means) for generating absolute values, an interpolation element (or means) for generating a matched sinogram with absolute values, an error correction element for maintaining the relative signal transmission of affected interpolation points, a conversion element (or means) for converting the absolute values of the interpolation points into relative values, a reconstruction element (or means) for generating a current interaction pattern, and an output for outputting the current interaction pattern.
  • the device 140 may include an input for receiving the output signal.
  • the device 140 may further include an element (or means) for obtaining the ON values, an element (or means) for obtaining the OFF values, a compensation element (or means) for generating ambient- compensated ON values, a noise estimation element (or means) for computing a noise estimate, and a datastore.
  • the device 140 may be implemented by special-purpose software (or firmware) run on one or more general-purpose or special-purpose computing devices.
  • each "element” or “means” of such a computing device refers to a conceptual equivalent of a method step; there is not always a one- to-one correspondence between elements/means and particular pieces of hardware or software routines.
  • One piece of hardware sometimes comprises different means/elements.
  • a processing unit may serve as one element/means when executing one instruction, but serve as another element/means when executing another instruction.
  • one element/means may be implemented by one instruction in some cases, but by a plurality of instructions in some other cases. Naturally, it is conceivable that one or more elements (means) are
  • the software controlled device 140 may include one or more processing units, e.g. a CPU ("Central Processing Unit"), a DSP ("Digital Signal Processor"), an ASIC ("Application-Specific Integrated Circuit"), discrete analog and/or digital components, or some other programmable logical device, such as an FPGA ("Field Programmable Gate Array”).
  • the device 140 may further include a system memory and a system bus that couples various system components including the system memory to the processing unit.
  • the system bus may be any of several types of bus structures including a memory bus or memory controller, a peripheral bus, and a local bus using any of a variety of bus architectures.
  • the system memory may include computer storage media in the form of volatile and/or non-volatile memory such as read only memory (ROM), random access memory (RAM) and flash memory.
  • ROM read only memory
  • RAM random access memory
  • flash memory may be stored in the system memory, or on other removable/non-removable volatile/non-volatile computer storage media which is included in or accessible to the computing device, such as magnetic media, optical media, flash memory cards, digital tape, solid state RAM, solid state ROM, etc.
  • the data processing device 140 may include one or more communication interfaces, such as a serial interface, a parallel interface, a USB interface, a wireless interface, a network adapter, etc, as well as one or more data acquisition devices, such as an AID converter.
  • the special-purpose software may be provided to the device 140 on any suitable computer-readable medium, including a record medium, and a readonly memory.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

L'invention concerne un procédé de fonctionnement d'un appareil tactile optique, l'appareil tactile optique comprenant un panneau, une pluralité d'émetteurs et une pluralité de détecteurs agencés par rapport au panneau, la pluralité de détecteurs étant conçus pour recevoir de la lumière provenant de la pluralité d'émetteurs, ce qui permet de définir des échantillons de détection de lumière transmis entre des paires d'émetteurs et de détecteurs. L'appareil tactile optique est en outre conçu pour fonctionner dans un mode d'évaluation de lumière ambiante comprenant les étapes consistant à : générer un premier ensemble d'échantillons sur un premier temps d'intégration et un second ensemble d'échantillons sur un second temps d'intégration à l'aide d'au moins un détecteur, et appliquer un filtre sur au moins le premier et le second ensemble d'échantillons pour générer une valeur de lumière ambiante résiduelle indiquant le bruit de lumière ambiante, l'appareil tactile étant conçu pour effectuer les étapes suivantes : acionner selon le mode d'évaluation de lumière ambiante pour une pluralité de répétitions.
PCT/IB2017/057201 2016-11-24 2017-11-17 Optimisation automatique de signal tactile Ceased WO2018096430A1 (fr)

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EP17873823.3A EP3545392A4 (fr) 2016-11-24 2017-11-17 Optimisation automatique de signal tactile
US16/461,241 US10761657B2 (en) 2016-11-24 2017-11-17 Automatic optimisation of touch signal
CN201780080010.2A CN110100226A (zh) 2016-11-24 2017-11-17 触摸信号的自动优化
US17/007,350 US20210089164A1 (en) 2016-11-24 2020-08-31 Automatic optimisation of touch signal

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US17/007,350 Continuation US20210089164A1 (en) 2016-11-24 2020-08-31 Automatic optimisation of touch signal

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10606414B2 (en) 2017-03-22 2020-03-31 Flatfrog Laboratories Ab Eraser for touch displays
US10739916B2 (en) 2017-03-28 2020-08-11 Flatfrog Laboratories Ab Touch sensing apparatus and method for assembly
US10775935B2 (en) 2016-12-07 2020-09-15 Flatfrog Laboratories Ab Touch device
US10775937B2 (en) 2015-12-09 2020-09-15 Flatfrog Laboratories Ab Stylus identification
US11029783B2 (en) 2015-02-09 2021-06-08 Flatfrog Laboratories Ab Optical touch system comprising means for projecting and detecting light beams above and inside a transmissive panel
US11182023B2 (en) 2015-01-28 2021-11-23 Flatfrog Laboratories Ab Dynamic touch quarantine frames
US11256371B2 (en) 2017-09-01 2022-02-22 Flatfrog Laboratories Ab Optical component
US11474644B2 (en) 2017-02-06 2022-10-18 Flatfrog Laboratories Ab Optical coupling in touch-sensing systems
US11567610B2 (en) 2018-03-05 2023-01-31 Flatfrog Laboratories Ab Detection line broadening
US11893189B2 (en) 2020-02-10 2024-02-06 Flatfrog Laboratories Ab Touch-sensing apparatus
US11943563B2 (en) 2019-01-25 2024-03-26 FlatFrog Laboratories, AB Videoconferencing terminal and method of operating the same
US12055969B2 (en) 2018-10-20 2024-08-06 Flatfrog Laboratories Ab Frame for a touch-sensitive device and tool therefor
US12056316B2 (en) 2019-11-25 2024-08-06 Flatfrog Laboratories Ab Touch-sensing apparatus
US12282653B2 (en) 2020-02-08 2025-04-22 Flatfrog Laboratories Ab Touch apparatus with low latency interactions

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI722710B (zh) * 2019-12-11 2021-03-21 茂達電子股份有限公司 具切片式積分時間感測機制的接近感測器及其感測方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090091554A1 (en) * 2007-10-05 2009-04-09 Microsoft Corporation Correcting for ambient light in an optical touch-sensitive device
US20110084939A1 (en) * 2009-10-12 2011-04-14 Garmin International, Inc. Infrared touchscreen electronics
US20130135258A1 (en) * 2011-11-28 2013-05-30 Jeffrey Stapleton King Optical Touch-Screen Systems And Methods Using A Planar Transparent Sheet
WO2013115710A2 (fr) * 2012-01-31 2013-08-08 Flatfrog Laboratories Ab Contrôle et correction de performances dans un appareil tactile
WO2014104967A1 (fr) * 2012-12-27 2014-07-03 Flatfrog Laboratories Ab Procédé et appareil pour détecter une lumière ambiante visible

Family Cites Families (567)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1452041A (fr) 1965-04-26 1966-02-25 Electronique & Automatisme Sa Dispositif de communication avec une calculatrice électronique
US3440426A (en) 1966-01-11 1969-04-22 Us Navy Solar attitude encoder
US3673327A (en) 1970-11-02 1972-06-27 Atomic Energy Commission Touch actuable data input panel assembly
IT961146B (it) 1971-03-12 1973-12-10 Schlumberger Compteurs Apparecchio permettente di determi nare la direzione di una radiazio ne luminosa
FR2172828B1 (fr) 1972-02-23 1974-12-13 Dassault Electronique
DE2654464A1 (de) 1976-12-01 1978-06-08 Sick Optik Elektronik Erwin Photoelektrische lichtempfangsanordnung
US4129384A (en) 1977-06-08 1978-12-12 Batelle Memorial Institute Optical extensometer
US4254333A (en) 1978-05-31 1981-03-03 Bergstroem Arne Optoelectronic circuit element
US4209255A (en) 1979-03-30 1980-06-24 United Technologies Corporation Single source aiming point locator
US4213707A (en) 1979-04-25 1980-07-22 Eastman Kodak Company Device for improving the accuracy of optical measuring apparatus and the like
US4254407A (en) 1979-07-18 1981-03-03 Ncr Corporation Data processing system having optically linked subsystems, including an optical keyboard
US4294543A (en) 1979-11-13 1981-10-13 Command Control & Communications Corporation Optical system for developing point coordinate information
US4484179A (en) 1980-04-16 1984-11-20 At&T Bell Laboratories Touch position sensitive surface
US4346376A (en) 1980-04-16 1982-08-24 Bell Telephone Laboratories, Incorporated Touch position sensitive surface
US4420261A (en) 1980-09-02 1983-12-13 Lowbar, Inc. Optical position location apparatus
JPS58111705A (ja) 1981-12-25 1983-07-02 Mitsutoyo Mfg Co Ltd 光学式測定装置
US4542375A (en) 1982-02-11 1985-09-17 At&T Bell Laboratories Deformable touch sensitive surface
GB2131544B (en) 1982-12-07 1986-03-05 Lowbar Inc Optical postition location apparatus
US4593191A (en) 1982-12-29 1986-06-03 At&T Bell Laboratories Pressure and optical sensitive device with deformable protrusions
GB8302997D0 (en) 1983-02-03 1983-03-09 Bergstrom A Electromagnetic radiation circuit element
US4507557A (en) 1983-04-01 1985-03-26 Siemens Corporate Research & Support, Inc. Non-contact X,Y digitizer using two dynamic ram imagers
US4550250A (en) 1983-11-14 1985-10-29 Hei, Inc. Cordless digital graphics input device
US4752655A (en) 1984-11-16 1988-06-21 Nippon Telegraph & Telephone Corporation Coordinate input device
US4692809A (en) 1984-11-20 1987-09-08 Hughes Aircraft Company Integrated touch paint system for displays
US4673918A (en) 1984-11-29 1987-06-16 Zenith Electronics Corporation Light guide having focusing element and internal reflector on same face
JPH0325220Y2 (fr) 1985-02-15 1991-05-31
JPH0325219Y2 (fr) 1985-02-15 1991-05-31
US4710760A (en) 1985-03-07 1987-12-01 American Telephone And Telegraph Company, At&T Information Systems Inc. Photoelastic touch-sensitive screen
US4688993A (en) 1985-03-21 1987-08-25 United Technologies Corporation Tangential link swashplate centering member
DE3511330A1 (de) 1985-03-28 1986-10-02 Siemens Ag Anordnung zum eingeben von grafischen mustern
US4949079A (en) 1985-04-19 1990-08-14 Hugh Loebner Brightpen/pad graphic device for computer inputs and the like
US5073770A (en) 1985-04-19 1991-12-17 Lowbner Hugh G Brightpen/pad II
US5159322A (en) 1985-04-19 1992-10-27 Loebner Hugh G Apparatus to digitize graphic and scenic information and to determine the position of a stylus for input into a computer or the like
US4688933A (en) 1985-05-10 1987-08-25 The Laitram Corporation Electro-optical position determining system
US4736191A (en) 1985-08-02 1988-04-05 Karl E. Matzke Touch activated control method and apparatus
JPH0762821B2 (ja) 1986-05-30 1995-07-05 株式会社日立製作所 タツチパネル入力装置
US4782328A (en) 1986-10-02 1988-11-01 Product Development Services, Incorporated Ambient-light-responsive touch screen data input method and system
US4891829A (en) 1986-11-19 1990-01-02 Exxon Research And Engineering Company Method and apparatus for utilizing an electro-optic detector in a microtomography system
US4868912A (en) 1986-11-26 1989-09-19 Digital Electronics Infrared touch panel
US4746770A (en) 1987-02-17 1988-05-24 Sensor Frame Incorporated Method and apparatus for isolating and manipulating graphic objects on computer video monitor
US4820050A (en) 1987-04-28 1989-04-11 Wells-Gardner Electronics Corporation Solid-state optical position determining apparatus
FR2614711B1 (fr) 1987-04-29 1992-03-13 Photonetics Procede et dispositif d'exploitation du signal d'ecran d'un ecran tactile
FR2617620B1 (fr) 1987-07-02 1992-09-25 Photonetics Ecran tactile de type optique
FR2617619B1 (fr) 1987-07-02 1990-01-05 Photonetics Dispositif de montage d'ecran tactile optique
US4772763A (en) 1987-08-25 1988-09-20 International Business Machines Corporation Data processing information input using optically sensed stylus features
JPH01195526A (ja) 1988-01-29 1989-08-07 Sony Corp タッチパネル装置
FR2631438B1 (fr) 1988-05-11 1991-06-21 Photonetics Procede de positionnement d'un objet par rapport a un plan, procede de mesure de longueur et dispositifs de mise en oeuvre de ces procedes
US4988983A (en) 1988-09-02 1991-01-29 Carroll Touch, Incorporated Touch entry system with ambient compensation and programmable amplification
US4986662A (en) 1988-12-19 1991-01-22 Amp Incorporated Touch entry using discrete reflectors
FR2645645B1 (fr) 1989-04-06 1991-07-12 Photonetics Perfectionnements aux procedes et dispositifs pour determiner l'angle de contact d'une goutte de liquide posee sur un substrat
US4916712A (en) 1989-07-27 1990-04-10 Mcdonnell Douglas Corporation Optically pumped slab laser
US5065185A (en) 1989-08-21 1991-11-12 Powers Edward A Multi-function detecting device for a document reproduction machine
ES2067693T3 (es) 1989-10-16 1995-04-01 Chiroscience Ltd Azabicicloheptanona quiral y un procedimiento para su preparacion.
US5105186A (en) 1990-05-25 1992-04-14 Hewlett-Packard Company Lcd touch screen
US6390370B1 (en) 1990-11-15 2002-05-21 Symbol Technologies, Inc. Light beam scanning pen, scan module for the device and method of utilization
US5166668A (en) 1991-04-10 1992-11-24 Data Stream Corporation Wireless pen-type input device for use with a computer
FR2676275A1 (fr) 1991-05-07 1992-11-13 Photonetics Dispositif de mesure a distance de la position d'un objet.
US5539514A (en) 1991-06-26 1996-07-23 Hitachi, Ltd. Foreign particle inspection apparatus and method with front and back illumination
US5345490A (en) 1991-06-28 1994-09-06 General Electric Company Method and apparatus for converting computed tomography (CT) data into finite element models
US5335557A (en) 1991-11-26 1994-08-09 Taizo Yasutake Touch sensitive input control device
CA2060564C (fr) 1992-02-06 1996-05-21 Toru Suzuki Dispositif de saisie sans fil pour ordinateur
US5483261A (en) 1992-02-14 1996-01-09 Itu Research, Inc. Graphical input controller and method with rear screen image detection
CH683370A5 (de) 1992-04-10 1994-02-28 Zumbach Electronic Ag Verfahren und Vorrichtung zur Messung der Abmessung eines Objekts.
CA2068191C (fr) 1992-05-07 1994-11-22 Fernand Sergerie Ruban de renfort arme
US7084859B1 (en) 1992-09-18 2006-08-01 Pryor Timothy R Programmable tactile touch screen displays and man-machine interfaces for improved vehicle instrumentation and telematics
US5248856A (en) 1992-10-07 1993-09-28 Microfield Graphics, Inc. Code-based, electromagnetic-field-responsive graphic data-acquisition system
NO310257B1 (no) 1992-11-25 2001-06-11 Sumitomo Electric Industries Fremgangsmåte for å detektere forurensninger i smeltet harpiks
US5502568A (en) 1993-03-23 1996-03-26 Wacom Co., Ltd. Optical position detecting unit, optical coordinate input unit and optical position detecting method employing a pattern having a sequence of 1's and 0's
JP3400485B2 (ja) 1993-03-23 2003-04-28 株式会社ワコム 光学式位置検出装置および光学式座標入力装置
DE4334937A1 (de) 1993-10-13 1995-10-05 Siemens Ag Computertomograph
JP3135183B2 (ja) 1993-10-29 2001-02-13 株式会社ワコム 位置指示器
WO1995014286A1 (fr) 1993-11-17 1995-05-26 Microsoft Corporation Systeme de saisie informatique a crayon sans fil
US5484966A (en) 1993-12-07 1996-01-16 At&T Corp. Sensing stylus position using single 1-D image sensor
JPH07200137A (ja) 1993-12-28 1995-08-04 Wacom Co Ltd 位置検出装置及びその位置指示器
JPH07261920A (ja) 1994-03-17 1995-10-13 Wacom Co Ltd 光学式位置検出装置および光学式座標入力装置
JP3421416B2 (ja) 1994-03-18 2003-06-30 株式会社ワコム 位置検出装置及びその位置指示器
US5525764A (en) 1994-06-09 1996-06-11 Junkins; John L. Laser scanning graphic input system
US5526422A (en) 1994-06-20 1996-06-11 At&T Corp. System and method for cleaning the display screen of a touch screen device
DE19521254A1 (de) 1994-06-24 1996-01-04 Minnesota Mining & Mfg Anzeigesystem mit Helligkeitsverstärkungsfilm
US5740224A (en) 1994-09-27 1998-04-14 University Of Delaware Cone beam synthetic arrays in three-dimensional computerized tomography
US5686942A (en) 1994-12-01 1997-11-11 National Semiconductor Corporation Remote computer input system which detects point source on operator
US5736686A (en) 1995-03-01 1998-04-07 Gtco Corporation Illumination apparatus for a digitizer tablet with improved light panel
US5764223A (en) 1995-06-07 1998-06-09 International Business Machines Corporation Touch-screen input device using the monitor as a light source operating at an intermediate frequency
DE69614693T2 (de) 1995-06-29 2002-06-20 Siemens Microelectronics Inc Gezielte beleuchtung unter verwendung der tir-technologie
GB9516441D0 (en) 1995-08-10 1995-10-11 Philips Electronics Uk Ltd Light pen input systems
EP0950227A1 (fr) 1996-05-01 1999-10-20 Xros, Inc. Lecteur d'empreintes digitales simple et compact avec construction d'images par balayage recurrent bidimensionnel
US6504143B2 (en) 1996-05-29 2003-01-07 Deutsche Telekom Ag Device for inputting data
US6067079A (en) 1996-06-13 2000-05-23 International Business Machines Corporation Virtual pointing device for touchscreens
DE19631414A1 (de) 1996-08-05 1998-02-19 Daimler Benz Ag Vorrichtung zur Aufnahme des Netzhautreflexbildes und Überlagerung von Zusatzbildern im Auge
WO1998007127A1 (fr) 1996-08-12 1998-02-19 Elo Touchsystems, Inc. Capteur a condition acoustique mettant en oeuvre une pluralite d'ondes non orthogonales entre elles
US5767517A (en) 1996-10-21 1998-06-16 Board Of Regents -Univ. Of Ne Hybrid resampling method for fan beam spect
US6072450A (en) 1996-11-28 2000-06-06 Casio Computer Co., Ltd. Display apparatus
US6061177A (en) 1996-12-19 2000-05-09 Fujimoto; Kenneth Noboru Integrated computer display and graphical input apparatus and method
AU1616497A (en) 1997-02-13 1998-09-08 Super Dimension Ltd. Six-degree tracking system
JPH113169A (ja) 1997-06-13 1999-01-06 Tokai Rika Co Ltd タッチ操作情報出力装置
US6229529B1 (en) 1997-07-11 2001-05-08 Ricoh Company, Ltd. Write point detecting circuit to detect multiple write points
US6480187B1 (en) 1997-08-07 2002-11-12 Fujitsu Limited Optical scanning-type touch panel
US6141104A (en) 1997-09-09 2000-10-31 Image Guided Technologies, Inc. System for determination of a location in three dimensional space
US6909419B2 (en) 1997-10-31 2005-06-21 Kopin Corporation Portable microdisplay system
US5945980A (en) 1997-11-14 1999-08-31 Logitech, Inc. Touchpad with active plane for pen detection
US9292111B2 (en) 1998-01-26 2016-03-22 Apple Inc. Gesturing with a multipoint sensing device
US6315156B1 (en) 1998-01-26 2001-11-13 Gpax International, Inc. Tape-form packaging system and apparatus for effecting assembly and disassembly thereof
KR100595911B1 (ko) 1998-01-26 2006-07-07 웨인 웨스터만 수동 입력 통합 방법 및 장치
DE19809934A1 (de) 1998-03-07 1999-09-09 Bosch Gmbh Robert Laserdisplay mit Berührungserfassung
WO1999046602A1 (fr) 1998-03-09 1999-09-16 Gou Lite Ltd. Mesure de la translation par voie optique
US6172667B1 (en) 1998-03-19 2001-01-09 Michel Sayag Optically-based touch screen input device
US6748098B1 (en) 1998-04-14 2004-06-08 General Electric Company Algebraic reconstruction of images from non-equidistant data
JP3827450B2 (ja) 1998-08-18 2006-09-27 富士通株式会社 光走査型タッチパネル
US7268774B2 (en) 1998-08-18 2007-09-11 Candledragon, Inc. Tracking motion of a writing instrument
US6972753B1 (en) 1998-10-02 2005-12-06 Semiconductor Energy Laboratory Co., Ltd. Touch panel, display device provided with touch panel and electronic equipment provided with display device
JP3530758B2 (ja) 1998-12-03 2004-05-24 キヤノン株式会社 座標入力用指示具
JP4007705B2 (ja) 1998-11-20 2007-11-14 富士通株式会社 光走査型タッチパネル
US6175999B1 (en) 1999-01-12 2001-01-23 Dell Usa, L.P. Universal fixture for pre-assembly of computer components
JP4245721B2 (ja) 1999-03-05 2009-04-02 プラスビジョン株式会社 座標入力用ペン
US6333735B1 (en) 1999-03-16 2001-12-25 International Business Machines Corporation Method and apparatus for mouse positioning device based on infrared light sources and detectors
JP4097353B2 (ja) 1999-04-07 2008-06-11 富士通株式会社 光走査型タッチパネル
JP4939682B2 (ja) 1999-04-27 2012-05-30 エーユー オプトロニクス コーポレイション 表示装置
DE19924448A1 (de) 1999-05-28 2000-12-07 Siemens Ag Verfahren zur Gewinnung von zeit- und ortsaufgelösten dreidimensionalen Datensätzen mittels der magnetischen Resonanz und Vorrichtung zur Durchführung des Verfahrens
FR2794246B1 (fr) 1999-05-31 2001-08-10 Saint Louis Inst Dispositif apte a determiner la position d'un objet dans un repere oxz
WO2000077945A2 (fr) 1999-06-09 2000-12-21 Beamcontrol Aps Procede determinant le gain d'un canal entre emetteurs et recepteurs
FR2795877B1 (fr) 1999-06-30 2001-10-05 Photonetics Composant optique partiellement reflechissant et source laser incorporant un tel composant
US6366277B1 (en) 1999-10-13 2002-04-02 Elo Touchsystems, Inc. Contaminant processing system for an acoustic touchscreen
JP3606138B2 (ja) 1999-11-05 2005-01-05 セイコーエプソン株式会社 ドライバｉｃ、電気光学装置及び電子機器
JP2001147772A (ja) 1999-11-19 2001-05-29 Fujitsu Takamisawa Component Ltd タッチパネル
JP3780785B2 (ja) 1999-11-30 2006-05-31 三菱電機株式会社 凹凸パターン検出装置
JP4604234B2 (ja) 1999-12-02 2011-01-05 タイコ・エレクトロニクス・コーポレイション 赤外線タッチシステムの分解能を高めるための装置及び方法
JP2001183987A (ja) 1999-12-27 2001-07-06 Pioneer Electronic Corp 冷却構造およびこれを用いたディスプレイ装置
US20040252867A1 (en) 2000-01-05 2004-12-16 Je-Hsiung Lan Biometric sensor
JP3881148B2 (ja) 2000-02-18 2007-02-14 株式会社リコー 座標検出用受光装置、座標入力／検出装置、電子黒板、装着位置検出方法及び記憶媒体
US6495832B1 (en) 2000-03-15 2002-12-17 Touch Controls, Inc. Photoelectric sensing array apparatus and method of using same
WO2001078052A1 (fr) 2000-04-05 2001-10-18 Dimensional Media Associates, Inc. Procedes et dispositifs pour unite de commande d'interface d'ordinateur a ecran tactile en environnement virtuel
US7859519B2 (en) 2000-05-01 2010-12-28 Tulbert David J Human-machine interface
US6864882B2 (en) 2000-05-24 2005-03-08 Next Holdings Limited Protected touch panel display system
US6690363B2 (en) 2000-06-19 2004-02-10 Next Holdings Limited Touch panel display system
US6660964B1 (en) 2000-09-22 2003-12-09 David Benderly Optical modification of laser beam cross section in object marking systems
US6724489B2 (en) 2000-09-22 2004-04-20 Daniel Freifeld Three dimensional scanning camera
AU2001212430A1 (en) 2000-10-27 2002-05-06 Elo Touchsystems, Inc. Touch confirming touchscreen utilizing plural touch sensors
CN1227617C (zh) 2000-11-06 2005-11-16 皇家菲利浦电子有限公司 测量输入装置运动的方法和输入设置
US6648485B1 (en) 2000-11-13 2003-11-18 International Business Machines Corporation Highly collimating tapered light guide for uniform illumination of flat panel displays
DE60134173D1 (de) 2000-12-30 2008-07-03 Univ Leeds Elektrische impedanztomografie
JP4004025B2 (ja) 2001-02-13 2007-11-07 日東電工株式会社 透明導電性積層体およびタッチパネル
DE10110744A1 (de) 2001-03-07 2002-09-26 Franc Godler Grosser, berührungsempfindlicher Bereich mit zeit- und ortsgesteuerten Sender- und Empfangsmodulen
US6452996B1 (en) 2001-03-16 2002-09-17 Ge Medical Systems Global Technology Company, Llc Methods and apparatus utilizing generalized helical interpolation algorithm
JP4768143B2 (ja) 2001-03-26 2011-09-07 株式会社リコー 情報入出力装置、情報入出力制御方法およびプログラム
US6738051B2 (en) 2001-04-06 2004-05-18 3M Innovative Properties Company Frontlit illuminated touch panel
JP4812181B2 (ja) 2001-04-20 2011-11-09 オリンパス株式会社 観察光学系及び撮像光学系及びそれを用いた装置
US6992659B2 (en) 2001-05-22 2006-01-31 Palmone, Inc. High transparency integrated enclosure touch screen assembly for a portable hand held device
JP3959678B2 (ja) 2001-07-13 2007-08-15 ミネベア株式会社 表示装置用タッチパネル
DE10136611C1 (de) 2001-07-23 2002-11-21 Jenoptik Laserdiode Gmbh Optische Anordnung zur Formung und Homogenisierung eines von einer Laserdiodenanordnung ausgehenden Laserstrahls
US6985137B2 (en) 2001-08-13 2006-01-10 Nokia Mobile Phones Ltd. Method for preventing unintended touch pad input due to accidental touching
US6927384B2 (en) 2001-08-13 2005-08-09 Nokia Mobile Phones Ltd. Method and device for detecting touch pad unit
US6765193B2 (en) 2001-08-21 2004-07-20 National Science And Technology Development Agency Optical touch switch structures
US20030048257A1 (en) 2001-09-06 2003-03-13 Nokia Mobile Phones Ltd. Telephone set having a touch pad device
US7254775B2 (en) 2001-10-03 2007-08-07 3M Innovative Properties Company Touch panel system and method for distinguishing multiple touch inputs
JP2005505075A (ja) 2001-10-09 2005-02-17 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ タッチセンシティビティ機能を有する装置
US20120188206A1 (en) 2001-11-02 2012-07-26 Neonode, Inc. Optical touch screen with tri-directional micro-lenses
US8339379B2 (en) 2004-04-29 2012-12-25 Neonode Inc. Light-based touch screen
US9471170B2 (en) 2002-11-04 2016-10-18 Neonode Inc. Light-based touch screen with shift-aligned emitter and receiver lenses
US20100238139A1 (en) 2009-02-15 2010-09-23 Neonode Inc. Optical touch screen systems using wide light beams
US6948840B2 (en) 2001-11-16 2005-09-27 Everbrite, Llc Light emitting diode light bar
US6664498B2 (en) 2001-12-04 2003-12-16 General Atomics Method and apparatus for increasing the material removal rate in laser machining
KR100449710B1 (ko) 2001-12-10 2004-09-22 삼성전자주식회사 원격 포인팅 방법 및 이에 적합한 장치
US7006080B2 (en) 2002-02-19 2006-02-28 Palm, Inc. Display system
JP4477811B2 (ja) 2002-02-27 2010-06-09 Ｈｏｙａ株式会社 固体撮像素子の取付板及びその取付板への取付方法
ATE334441T1 (de) 2002-03-13 2006-08-15 O Pen Aps Berührungs-pad und verfahren zum betreiben des berührungs-pad
DE10211307A1 (de) 2002-03-13 2003-11-20 Mechaless Systems Gmbh Vorrichtung und Verfahren zur optoelektronischen Erkennung der Bewegung und/oder Position eines Objekts
CA2480182C (fr) 2002-03-27 2008-02-05 Nellcor Puritan Bennett Incorporated Systeme d'ecran tactile infrarouge
DE50308334D1 (de) 2002-05-07 2007-11-22 Schott Ag Beleuchtungseinrichtung für Schaltflächen
JP2003330603A (ja) 2002-05-13 2003-11-21 Ricoh Co Ltd 座標検出装置、座標検出方法、その方法をコンピュータに実行させる座標検出プログラムおよび座標検出プログラムを記録した記録媒体
US7176897B2 (en) 2002-05-17 2007-02-13 3M Innovative Properties Company Correction of memory effect errors in force-based touch panel systems
US7952570B2 (en) 2002-06-08 2011-05-31 Power2B, Inc. Computer navigation
US20090143141A1 (en) 2002-08-06 2009-06-04 Igt Intelligent Multiplayer Gaming System With Multi-Touch Display
US7151532B2 (en) 2002-08-09 2006-12-19 3M Innovative Properties Company Multifunctional multilayer optical film
JP2004078613A (ja) 2002-08-19 2004-03-11 Fujitsu Ltd タッチパネル装置
AU2003279763A1 (en) 2002-10-01 2004-04-23 Microfabrica Inc. Monolithic structures including alignment and/or retention fixtures for accepting components
US7133031B2 (en) 2002-10-31 2006-11-07 Microsoft Corporation Optical system design for a universal computing device
JP4093308B2 (ja) 2002-11-01 2008-06-04 富士通株式会社 タッチパネル装置及び接触位置検出方法
US8587562B2 (en) 2002-11-04 2013-11-19 Neonode Inc. Light-based touch screen using elliptical and parabolic reflectors
US8902196B2 (en) 2002-12-10 2014-12-02 Neonode Inc. Methods for determining a touch location on a touch screen
US7042444B2 (en) 2003-01-17 2006-05-09 Eastman Kodak Company OLED display and touch screen
US7629967B2 (en) 2003-02-14 2009-12-08 Next Holdings Limited Touch screen signal processing
US7532206B2 (en) 2003-03-11 2009-05-12 Smart Technologies Ulc System and method for differentiating between pointers used to contact touch surface
WO2004081956A2 (fr) 2003-03-12 2004-09-23 O-Pen Aps Detecteur de rayonnement multitache
US7435940B2 (en) 2003-03-12 2008-10-14 Flatfrog Laboratories Ab System and a method of determining the position of a radiation emitting element
KR100533839B1 (ko) 2003-03-14 2005-12-07 삼성전자주식회사 동작기반 전자기기 제어장치 및 그 제어방법
US7243849B2 (en) 2003-04-07 2007-07-17 Silverbrook Research Pty Ltd Handheld coded data reader
US7786983B2 (en) 2003-04-08 2010-08-31 Poa Sana Liquidating Trust Apparatus and method for a data input device using a light lamina screen
US7133032B2 (en) 2003-04-24 2006-11-07 Eastman Kodak Company OLED display and touch screen
US7362320B2 (en) 2003-06-05 2008-04-22 Hewlett-Packard Development Company, L.P. Electronic device having a light emitting/detecting display screen
JP2005004278A (ja) 2003-06-09 2005-01-06 Ricoh Elemex Corp 座標入力装置
US7432893B2 (en) 2003-06-14 2008-10-07 Massachusetts Institute Of Technology Input device based on frustrated total internal reflection
US7474772B2 (en) 2003-06-25 2009-01-06 Atrua Technologies, Inc. System and method for a miniature user input device
JP4405766B2 (ja) 2003-08-07 2010-01-27 キヤノン株式会社 座標入力装置、座標入力方法
WO2005022194A2 (fr) 2003-08-13 2005-03-10 Lettvin Jonathan D Système d'imagerie
US7359041B2 (en) 2003-09-04 2008-04-15 Avago Technologies Ecbu Ip Pte Ltd Method and system for optically tracking a target using a triangulation technique
WO2005026930A2 (fr) 2003-09-12 2005-03-24 O-Pen Aps Systeme et procede permettant de determiner une position d'un element emetteur de rayonnement
EP1665024B1 (fr) 2003-09-12 2011-06-29 FlatFrog Laboratories AB Systeme et procede pour determiner la position d'un element de diffusion/reflexion de rayonnement
KR100534968B1 (ko) 2003-09-16 2005-12-08 현대자동차주식회사 전자소자의 냉각구조
WO2005029172A2 (fr) 2003-09-22 2005-03-31 Koninklijke Philips Electronics N.V. Ecran tactile de saisie au moyen d'un guide de lumiere
JP2007506180A (ja) 2003-09-22 2007-03-15 コニンクリユケ フィリップス エレクトロニクス エヌ．ブイ． 表示モニタのための座標検出システム
US9123077B2 (en) 2003-10-07 2015-09-01 Hospira, Inc. Medication management system
US7221374B2 (en) 2003-10-21 2007-05-22 Hewlett-Packard Development Company, L.P. Adjustment of color in displayed images based on identification of ambient light sources
JP2005165199A (ja) 2003-12-05 2005-06-23 Alps Electric Co Ltd プリズムシート及び照光装置及び面発光装置並びに液晶表示装置
US7265748B2 (en) 2003-12-11 2007-09-04 Nokia Corporation Method and device for detecting touch pad input
WO2005060309A2 (fr) 2003-12-11 2005-06-30 Color Kinetics Incorporated Appareil et procedes de gestion thermique pour dispositifs d'eclairage
GB2409304B (en) 2003-12-19 2007-11-14 Westerngeco Ltd Processing geophysical data
JP4616559B2 (ja) 2004-01-15 2011-01-19 大日本印刷株式会社 表示装置及び表示システム
US7087907B1 (en) 2004-02-02 2006-08-08 Advanced Micro Devices, Inc. Detection of contamination in imaging systems by fluorescence and/or absorption spectroscopy
US7342705B2 (en) 2004-02-03 2008-03-11 Idc, Llc Spatial light modulator with integrated optical compensation structure
JP4522113B2 (ja) 2004-03-11 2010-08-11 キヤノン株式会社 座標入力装置
US20060033725A1 (en) 2004-06-03 2006-02-16 Leapfrog Enterprises, Inc. User created interactive interface
US7310090B2 (en) 2004-03-25 2007-12-18 Avago Technologies Ecbm Ip (Singapore) Pte Ltd. Optical generic switch panel
US6965836B2 (en) 2004-04-19 2005-11-15 Battelle Energy Alliance, Llc Method and apparatus for two dimensional surface property analysis based on boundary measurement
US7538759B2 (en) 2004-05-07 2009-05-26 Next Holdings Limited Touch panel display system with illumination and detection provided from a single edge
US20060017706A1 (en) 2004-05-11 2006-01-26 Motion Computing, Inc. Display for stylus input displays
JP4429083B2 (ja) 2004-06-03 2010-03-10 キヤノン株式会社 遮光型座標入力装置及びその座標入力方法
GB0413747D0 (en) 2004-06-19 2004-07-21 Atomic Energy Authority Uk Optical keyboard
US8184108B2 (en) 2004-06-30 2012-05-22 Poa Sana Liquidating Trust Apparatus and method for a folded optical element waveguide for use with light based touch screens
US7743348B2 (en) 2004-06-30 2010-06-22 Microsoft Corporation Using physical objects to adjust attributes of an interactive display application
US7565020B2 (en) 2004-07-03 2009-07-21 Microsoft Corp. System and method for image coding employing a hybrid directional prediction and wavelet lifting
ES2555309T3 (es) 2004-07-06 2015-12-30 Maricare Oy Producto sensor para la detección de campo eléctrico
JP2006039686A (ja) 2004-07-22 2006-02-09 Pioneer Electronic Corp タッチパネル装置、タッチ領域検出方法およびタッチ領域検出プログラム
US7653883B2 (en) 2004-07-30 2010-01-26 Apple Inc. Proximity detector in handheld device
US20060038698A1 (en) 2004-08-19 2006-02-23 Chen Jim T Multi-purpose remote control input device
US20060061861A1 (en) 2004-09-23 2006-03-23 Reflexite Corporation High performance rear-projection screen
US20060066586A1 (en) 2004-09-27 2006-03-30 Gally Brian J Touchscreens for displays
EP1815388B1 (fr) 2004-11-15 2013-03-06 Hologic, Inc. Generation et affichage geometriques de mise en correspondance de cliches mammaires et d'images de tomosynthese
US8599140B2 (en) 2004-11-17 2013-12-03 International Business Machines Corporation Providing a frustrated total internal reflection touch interface
US7847789B2 (en) 2004-11-23 2010-12-07 Microsoft Corporation Reducing accidental touch-sensitive device activation
US20060132454A1 (en) 2004-12-16 2006-06-22 Deng-Peng Chen Systems and methods for high resolution optical touch position systems
US20060158437A1 (en) 2005-01-20 2006-07-20 Blythe Michael M Display device
US7800594B2 (en) 2005-02-03 2010-09-21 Toshiba Matsushita Display Technology Co., Ltd. Display device including function to input information from screen by light
US8298078B2 (en) 2005-02-28 2012-10-30 Wms Gaming Inc. Wagering game machine with biofeedback-aware game presentation
JP2008533581A (ja) 2005-03-10 2008-08-21 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ タッチスクリーン・ディスプレイと相互作用する複数オブジェクトの位置・大きさ・形を検出するためのシステムおよび方法
US20060202974A1 (en) 2005-03-10 2006-09-14 Jeffrey Thielman Surface
US7705835B2 (en) 2005-03-28 2010-04-27 Adam Eikman Photonic touch screen apparatus and method of use
US7840625B2 (en) 2005-04-07 2010-11-23 California Institute Of Technology Methods for performing fast discrete curvelet transforms of data
JP2008545183A (ja) 2005-05-12 2008-12-11 サーク・コーポレーション 光を所望の方向に向けるためにエーロゲルを使用する光学ディスプレイおよび光学式タッチパッドを含んだ、再構成可能な対話型インターフェース装置
US7646833B1 (en) 2005-05-23 2010-01-12 Marvell International Ltd. Channel equalization in receivers
WO2007003196A2 (fr) 2005-07-05 2007-01-11 O-Pen Aps Systeme de pave tactile
US7916144B2 (en) 2005-07-13 2011-03-29 Siemens Medical Solutions Usa, Inc. High speed image reconstruction for k-space trajectory data using graphic processing unit (GPU)
US7629968B2 (en) 2005-07-29 2009-12-08 Avago Technologies Fiber Ip (Singapore) Pte. Ltd. Methods and systems for detecting selections on a touch screen display
US7737959B2 (en) 2005-09-08 2010-06-15 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Position detection system using laser speckle
KR20070030547A (ko) 2005-09-13 2007-03-16 삼성전자주식회사 집광 부재, 이의 제조 방법 및 이를 갖는 표시 장치
JP4510738B2 (ja) 2005-09-28 2010-07-28 株式会社 日立ディスプレイズ 表示装置
US8847924B2 (en) 2005-10-03 2014-09-30 Hewlett-Packard Development Company, L.P. Reflecting light
JP2007128497A (ja) 2005-10-05 2007-05-24 Sony Corp 表示装置および表示方法
US20070109239A1 (en) 2005-11-14 2007-05-17 Den Boer Willem Integrated light sensitive liquid crystal display
US7655901B2 (en) 2005-11-18 2010-02-02 Research In Motion Limited Light assisted keyboard for mobile communication device
JP2007163891A (ja) 2005-12-14 2007-06-28 Sony Corp 表示装置
US8077147B2 (en) 2005-12-30 2011-12-13 Apple Inc. Mouse with optical sensing surface
US8013845B2 (en) 2005-12-30 2011-09-06 Flatfrog Laboratories Ab Optical touch pad with multilayer waveguide
EP1835464A1 (fr) 2006-03-14 2007-09-19 GSF-Forschungszentrum für Umwelt und Gesundheit GmbH Procédé de reconstruction d'une fonction d'image à partir de données de radon
US8218154B2 (en) 2006-03-30 2012-07-10 Flatfrog Laboratories Ab System and a method of determining a position of a scattering/reflecting element on the surface of a radiation transmissive element
US7397418B1 (en) 2006-06-05 2008-07-08 Sandia Corporation SAR image formation with azimuth interpolation after azimuth transform
JP4891666B2 (ja) 2006-06-22 2012-03-07 東芝モバイルディスプレイ株式会社 液晶表示装置
EP2041642A2 (fr) 2006-06-28 2009-04-01 Koninklijke Philips Electronics N.V. Procédé et dispositif d'apprentissage et de reconnaissance d'objets sur la base de paramètres optiques
US20080007541A1 (en) 2006-07-06 2008-01-10 O-Pen A/S Optical touchpad system and waveguide for use therein
US8094136B2 (en) 2006-07-06 2012-01-10 Flatfrog Laboratories Ab Optical touchpad with three-dimensional position determination
US8031186B2 (en) 2006-07-06 2011-10-04 Flatfrog Laboratories Ab Optical touchpad system and waveguide for use therein
US7351949B2 (en) 2006-07-10 2008-04-01 Avago Technologies General Ip Pte Ltd Optical generic switch panel
US7394058B2 (en) 2006-07-12 2008-07-01 Agilent Technologies, Inc. Touch screen with light-enhancing layer
US8144271B2 (en) 2006-08-03 2012-03-27 Perceptive Pixel Inc. Multi-touch sensing through frustrated total internal reflection
WO2008015365A2 (fr) 2006-08-03 2008-02-07 France Telecom Dispositif de capture d'images et de saisie haptique
US8441467B2 (en) 2006-08-03 2013-05-14 Perceptive Pixel Inc. Multi-touch sensing display through frustrated total internal reflection
JP2009545828A (ja) 2006-08-03 2009-12-24 パーセプティブ ピクセル，インク． 全反射妨害による多接触検知表示装置
US8120239B2 (en) 2006-08-16 2012-02-21 Samsung Electronics Co., Ltd. Infrared display with luminescent quantum dots
US7969410B2 (en) 2006-08-23 2011-06-28 Avago Technologies General Ip (Singapore) Pte. Ltd. Optically detecting click events
KR20080023832A (ko) 2006-09-12 2008-03-17 삼성전자주식회사 휴대 단말기용 터치 스크린 및 그의 절전 방법
US8167698B2 (en) 2006-09-13 2012-05-01 Koninklijke Philips Electronics N.V. Determining the orientation of an object placed on a surface
JP4842747B2 (ja) 2006-09-20 2011-12-21 株式会社リコー 光走査装置、画像形成装置およびカラー画像形成装置
WO2008034184A1 (fr) 2006-09-22 2008-03-27 Rpo Pty Limited Configurations de guides d'ondes pour systèmes tactiles optiques
JP4567028B2 (ja) 2006-09-26 2010-10-20 エルジー ディスプレイ カンパニー リミテッド マルチタッチ感知機能を有する液晶表示装置とその駆動方法
KR100782431B1 (ko) 2006-09-29 2007-12-05 주식회사 넥시오 적외선 터치스크린의 다점 좌표인식방법 및 접점면적인식방법
US9063617B2 (en) 2006-10-16 2015-06-23 Flatfrog Laboratories Ab Interactive display system, tool for use with the system, and tool management apparatus
US8094129B2 (en) 2006-11-27 2012-01-10 Microsoft Corporation Touch sensing using shadow and reflective modes
US7924272B2 (en) 2006-11-27 2011-04-12 Microsoft Corporation Infrared sensor integrated in a touch panel
US8269746B2 (en) 2006-11-27 2012-09-18 Microsoft Corporation Communication with a touch screen
EP2088499A4 (fr) 2006-11-30 2011-11-30 Sega Corp Appareil de mise en entrée de position
EP2126673A4 (fr) 2006-12-08 2015-03-04 Flatfrog Lab Ab Détermination de position dans les systèmes d'interface optiques
TWM314487U (en) 2006-12-20 2007-06-21 Amtran Technology Co Ltd Remote control having the audio-video function
KR100833753B1 (ko) 2006-12-21 2008-05-30 삼성에스디아이 주식회사 유기 전계 발광 표시 장치 및 그 구동방법
JP4775247B2 (ja) 2006-12-21 2011-09-21 三菱電機株式会社 位置検出装置
CN101211246B (zh) 2006-12-26 2010-06-23 乐金显示有限公司 有机发光二极管板和包括其的触摸屏系统
US8125455B2 (en) 2007-01-03 2012-02-28 Apple Inc. Full scale calibration measurement for multi-touch surfaces
JP2008181411A (ja) 2007-01-25 2008-08-07 Nitto Denko Corp タッチパネル用光導波路
TWM318760U (en) 2007-01-26 2007-09-11 Pixart Imaging Inc Remote controller
US20080189046A1 (en) 2007-02-02 2008-08-07 O-Pen A/S Optical tool with dynamic electromagnetic radiation and a system and method for determining the position and/or motion of an optical tool
US20080192025A1 (en) 2007-02-13 2008-08-14 Denny Jaeger Touch input devices for display/sensor screen
WO2008112146A2 (fr) 2007-03-07 2008-09-18 The Trustees Of The University Of Pennsylvania Imagerie partiellement parallèle en 2d avec reconstruction de données basée sur des voisins environnants d'espace k
US8243048B2 (en) 2007-04-25 2012-08-14 Elo Touch Solutions, Inc. Touchscreen for detecting multiple touches
JP2010527100A (ja) 2007-05-11 2010-08-05 アールピーオー・ピーティワイ・リミテッド 透過性ボディ
US20080291668A1 (en) 2007-05-21 2008-11-27 Rohm And Haas Denmark Finance A/S Mini lightbar illuminators for LCE displays
US8610677B2 (en) 2007-05-30 2013-12-17 Jens Martin Jensen Touch-sensitive pointing device with guiding lines
US7936341B2 (en) 2007-05-30 2011-05-03 Microsoft Corporation Recognizing selection regions from multiple simultaneous inputs
CN101075168B (zh) 2007-06-22 2014-04-02 北京汇冠新技术股份有限公司 一种识别红外触摸屏上多个触摸点的方法
JP4368392B2 (ja) 2007-06-13 2009-11-18 東海ゴム工業株式会社 変形センサシステム
US7835999B2 (en) 2007-06-27 2010-11-16 Microsoft Corporation Recognizing input gestures using a multi-touch input device, calculated graphs, and a neural network with link weights
US9019245B2 (en) 2007-06-28 2015-04-28 Intel Corporation Multi-function tablet pen input device
EP2009541B1 (fr) 2007-06-29 2015-06-10 Barco N.V. Ecran tactile à vision nocturne
JP2009043636A (ja) 2007-08-10 2009-02-26 Mitsubishi Electric Corp 面状光源装置および表示装置
US8384693B2 (en) 2007-08-30 2013-02-26 Next Holdings Limited Low profile touch panel systems
US8760400B2 (en) 2007-09-07 2014-06-24 Apple Inc. Gui applications for use with 3D remote controller
WO2009036001A1 (fr) 2007-09-10 2009-03-19 Lighting Science Group Corporation Dispositif d'éclairage blanc chaud
US20090067178A1 (en) 2007-09-11 2009-03-12 Kismart Corporation Method of forming light-scattering dots inside the diffusion plate and light guide plate by laser engraving
US8122384B2 (en) 2007-09-18 2012-02-21 Palo Alto Research Center Incorporated Method and apparatus for selecting an object within a user interface by performing a gesture
US8395588B2 (en) 2007-09-19 2013-03-12 Canon Kabushiki Kaisha Touch panel
US8587559B2 (en) 2007-09-28 2013-11-19 Samsung Electronics Co., Ltd. Multipoint nanostructure-film touch screen
WO2009048365A1 (fr) 2007-10-10 2009-04-16 Flatfrog Laboratories Ab Pavé tactile et procédé d'exploitation du pavé tactile
US20100073318A1 (en) 2008-09-24 2010-03-25 Matsushita Electric Industrial Co., Ltd. Multi-touch surface providing detection and tracking of multiple touch points
JP5082779B2 (ja) 2007-11-07 2012-11-28 株式会社日立製作所 平面型表示装置
KR101407300B1 (ko) 2007-11-19 2014-06-13 엘지디스플레이 주식회사 멀티 터치 평판 표시모듈
AR064377A1 (es) 2007-12-17 2009-04-01 Rovere Victor Manuel Suarez Dispositivo para sensar multiples areas de contacto contra objetos en forma simultanea
JP5381715B2 (ja) 2007-12-17 2014-01-08 日本電気株式会社 入力装置及びそれを備えた情報端末、入力方法
US20090168459A1 (en) 2007-12-27 2009-07-02 Qualcomm Incorporated Light guide including conjugate film
US20090174679A1 (en) 2008-01-04 2009-07-09 Wayne Carl Westerman Selective Rejection of Touch Contacts in an Edge Region of a Touch Surface
US20090187842A1 (en) 2008-01-22 2009-07-23 3Dlabs Inc., Ltd. Drag and Drop User Interface for Portable Electronic Devices with Touch Sensitive Screens
US9857915B2 (en) 2008-01-25 2018-01-02 Microsoft Technology Licensing, Llc Touch sensing for curved displays
EP2469399B1 (fr) 2008-02-11 2019-09-11 Idean Enterprises Oy Interface d'utilisateur à couche
WO2009102681A2 (fr) 2008-02-11 2009-08-20 Next Holdings, Inc. Systèmes et procédés pour résoudre des scénarios multitouches pour des écrans tactiles optiques
US8766925B2 (en) 2008-02-28 2014-07-01 New York University Method and apparatus for providing input to a processor, and a sensor pad
US9454256B2 (en) 2008-03-14 2016-09-27 Apple Inc. Sensor configurations of an input device that are switchable based on mode
US8788967B2 (en) 2008-04-10 2014-07-22 Perceptive Pixel, Inc. Methods of interfacing with multi-input devices and multi-input display systems employing interfacing techniques
US8209628B1 (en) 2008-04-11 2012-06-26 Perceptive Pixel, Inc. Pressure-sensitive manipulation of displayed objects
TW200945123A (en) 2008-04-25 2009-11-01 Ind Tech Res Inst A multi-touch position tracking apparatus and interactive system and image processing method there of
US20090278816A1 (en) 2008-05-06 2009-11-12 Next Holdings Limited Systems and Methods For Resolving Multitouch Scenarios Using Software Filters
US8830181B1 (en) 2008-06-01 2014-09-09 Cypress Semiconductor Corporation Gesture recognition system for a touch-sensing surface
US8553014B2 (en) 2008-06-19 2013-10-08 Neonode Inc. Optical touch screen systems using total internal reflection
US8676007B2 (en) 2008-06-19 2014-03-18 Neonode Inc. Light-based touch surface with curved borders and sloping bezel
TW201005606A (en) 2008-06-23 2010-02-01 Flatfrog Lab Ab Detecting the locations of a plurality of objects on a touch surface
WO2010006885A2 (fr) 2008-06-23 2010-01-21 Flatfrog Laboratories Ab Procédé de détection de l'emplacement d'un objet sur une surface tactile
TW201001258A (en) 2008-06-23 2010-01-01 Flatfrog Lab Ab Determining the location of one or more objects on a touch surface
TW201013492A (en) 2008-06-23 2010-04-01 Flatfrog Lab Ab Determining the location of one or more objects on a touch surface
TW201007530A (en) 2008-06-23 2010-02-16 Flatfrog Lab Ab Detecting the location of an object on a touch surface
CN101644854A (zh) 2008-08-04 2010-02-10 鸿富锦精密工业（深圳）有限公司 直下式背光模组
CN201233592Y (zh) 2008-08-05 2009-05-06 北京汇冠新技术有限公司 用于红外触摸屏的反射光路结构
JP5003629B2 (ja) 2008-08-06 2012-08-15 パナソニック株式会社 情報端末装置
US9092092B2 (en) 2008-08-07 2015-07-28 Rapt Ip Limited Detecting multitouch events in an optical touch-sensitive device using touch event templates
US8426799B2 (en) 2008-08-07 2013-04-23 Rapt Ip Limited Optical control system with feedback control
KR101554606B1 (ko) 2008-08-07 2015-10-06 랩트 아이피 리미티드 변조된 에미터를 가진 광학 제어 시스템
KR101593574B1 (ko) 2008-08-07 2016-02-18 랩트 아이피 리미티드 광학 터치 감응 장치에서 멀티터치 이벤트를 감지하는 방법 및 기구
US8093545B2 (en) 2008-09-26 2012-01-10 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Lensless user input device with optical interference based on diffraction with a small aperture
US8237684B2 (en) 2008-09-26 2012-08-07 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. User input device with planar light guide illumination plate
US9317159B2 (en) 2008-09-26 2016-04-19 Hewlett-Packard Development Company, L.P. Identifying actual touch points using spatial dimension information obtained from light transceivers
US8154532B2 (en) * 2008-10-15 2012-04-10 Au Optronics Corporation LCD display with photo sensor touch function
KR100972932B1 (ko) 2008-10-16 2010-07-28 인하대학교 산학협력단 터치 스크린 패널
KR101323045B1 (ko) 2008-10-21 2013-10-29 엘지디스플레이 주식회사 감지장치와 그 출력 증폭방법
FI121862B (fi) 2008-10-24 2011-05-13 Valtion Teknillinen Järjestely kosketusnäyttöä varten ja vastaava valmistusmenetelmä
US8860696B2 (en) * 2008-11-12 2014-10-14 Flatfrog Laboratories Ab Integrated touch-sensing display apparatus and method of operating the same
US20100125438A1 (en) 2008-11-15 2010-05-20 Mathieu Audet Method of scanning, analyzing and identifying electro magnetic field sources
KR100940435B1 (ko) 2008-11-26 2010-02-10 한국광기술원 2차원 광섬유 스캐닝 모듈, 이를 구비하는 광섬유 스캐닝 시스템 및 방법
SE533704C2 (sv) 2008-12-05 2010-12-07 Flatfrog Lab Ab Pekkänslig apparat och förfarande för drivning av densamma
US8317352B2 (en) 2008-12-11 2012-11-27 Robert Saccomanno Non-invasive injection of light into a transparent substrate, such as a window pane through its face
JP5239835B2 (ja) 2008-12-24 2013-07-17 富士ゼロックス株式会社 光導波路及び光導波路型タッチパネル
US8407606B1 (en) 2009-01-02 2013-03-26 Perceptive Pixel Inc. Allocating control among inputs concurrently engaging an object displayed on a multi-touch device
EP2377005B1 (fr) 2009-01-14 2014-12-17 Citron GmbH Panneau de commande à touches multiples
US20130181896A1 (en) 2009-01-23 2013-07-18 Qualcomm Mems Technologies, Inc. Integrated light emitting and light detecting device
WO2010085286A1 (fr) 2009-01-23 2010-07-29 Qualcomm Mems Technologies, Inc. Dispositif intégré d'émission de lumière et de détection de lumière
US8487914B2 (en) 2009-06-18 2013-07-16 Avago Technologies General Ip (Singapore) Pte. Ltd. Optical fingerprint navigation device with light guide film
WO2010092993A1 (fr) 2009-02-13 2010-08-19 株式会社 東芝 Dispositif de traitement d'informations
US9158416B2 (en) 2009-02-15 2015-10-13 Neonode Inc. Resilient light-based touch surface
US9063614B2 (en) 2009-02-15 2015-06-23 Neonode Inc. Optical touch screens
EP2665035A3 (fr) 2009-02-20 2016-12-07 Werth Messtechnik GmbH Procédé destiné à la mesure d'un objet
US8331751B2 (en) 2009-03-02 2012-12-11 mBio Diagnositcs, Inc. Planar optical waveguide with core of low-index-of-refraction interrogation medium
JP5269648B2 (ja) 2009-03-02 2013-08-21 パナソニック株式会社 携帯端末装置及び入力装置
TWI524238B (zh) 2009-03-31 2016-03-01 萬國商業機器公司 多觸點光學接觸面板
TWI399677B (zh) 2009-03-31 2013-06-21 Arima Lasers Corp 光學偵測裝置及其方法
JP5146389B2 (ja) 2009-04-03 2013-02-20 ソニー株式会社 情報処理装置、および推定方法
WO2010123809A2 (fr) 2009-04-20 2010-10-28 3M Innovative Properties Company Convertisseur de longueur d'onde à pompage non radiatif
FI124221B (fi) 2009-04-24 2014-05-15 Valtion Teknillinen Käyttäjäsyötejärjestely ja siihen liittyvä valmistusmenetelmä
US20100277436A1 (en) 2009-04-29 2010-11-04 Hong Kong Applied Science And Technology Research Institute Co., Ltd. Sensing System for a Touch Sensitive Device
WO2010127241A2 (fr) 2009-04-30 2010-11-04 The Regents Of The University Of California Système et procédés pour mise en oeuvre rapide de tomographie à inclinaison égale
US20100283785A1 (en) 2009-05-11 2010-11-11 Agilent Technologies, Inc. Detecting peaks in two-dimensional signals
US8154529B2 (en) 2009-05-14 2012-04-10 Atmel Corporation Two-dimensional touch sensors
US20120068973A1 (en) 2009-05-18 2012-03-22 Flatfrog Laboratories Ab Determining The Location Of An Object On A Touch Surface
US20100295821A1 (en) 2009-05-20 2010-11-25 Tom Chang Optical touch panel
US20100315379A1 (en) 2009-05-22 2010-12-16 Matthew Allard Display Devices With Integrated Optical Components For Use in Position Detection
US8358901B2 (en) 2009-05-28 2013-01-22 Microsoft Corporation Optic having a cladding
US8736581B2 (en) 2009-06-01 2014-05-27 Perceptive Pixel Inc. Touch sensing with frustrated total internal reflection
US9323396B2 (en) 2009-06-01 2016-04-26 Perceptive Pixel, Inc. Touch sensing
TWI414974B (zh) 2009-06-17 2013-11-11 Novatek Microelectronics Corp 觸控面板之觸碰點位置感應方法及位置感應系統
TWI420371B (zh) 2009-06-23 2013-12-21 Raydium Semiconductor Corportation 光學式觸控系統及其運作方法
EP2446238B1 (fr) 2009-06-23 2016-08-03 Imec Capteurs tactiles optiques
CN201437963U (zh) 2009-07-07 2010-04-14 台湾奈普光电科技股份有限公司 导光板结构改良
CN201465071U (zh) 2009-07-20 2010-05-12 贺伟 红外线触摸屏框架结构
US8730212B2 (en) 2009-08-21 2014-05-20 Microsoft Corporation Illuminator for touch- and object-sensitive display
KR100941927B1 (ko) 2009-08-21 2010-02-18 이성호 터치입력 인식방법 및 장치
GB2486843B (en) 2009-08-25 2014-06-18 Promethean Ltd Interactive surface with a plurality of input detection technologies
US7932899B2 (en) 2009-09-01 2011-04-26 Next Holdings Limited Determining the location of touch points in a position detection system
US8692807B2 (en) 2009-09-02 2014-04-08 Flatfrog Laboratories Ab Touch surface with a compensated signal profile
SE534244C2 (sv) 2009-09-02 2011-06-14 Flatfrog Lab Ab Pekkänsligt system och förfarande för funktionsstyrning av detsamma
US9035909B2 (en) 2009-09-11 2015-05-19 Flatfrog Laboratories Ab Touch surface with variable refractive index
KR101606883B1 (ko) 2009-09-18 2016-04-12 삼성디스플레이 주식회사 터치감지장치
KR20110032640A (ko) 2009-09-23 2011-03-30 삼성전자주식회사 멀티 터치 인식 디스플레이 장치
DE102009042922B4 (de) 2009-09-24 2019-01-24 Siemens Healthcare Gmbh Verfahren und Vorrichtung zur Bildbestimmung aus beim Durchlaufen einer Trajektorie aufgenommenen Röntgenprojektionen
US8749512B2 (en) 2009-09-30 2014-06-10 Apple Inc. Negative pixel compensation
US20110084949A1 (en) * 2009-10-09 2011-04-14 Ming-Chih Chiu Power converters and e-paper devices using the same
EP2491480A4 (fr) 2009-10-19 2014-07-30 Flatfrog Lab Ab Surface tactile avec compensation bidimensionnelle
JP5782446B2 (ja) 2009-10-19 2015-09-24 フラットフロッグ ラボラトリーズ アーベーＦｌａｔＦｒｏｇ Ｌａｂｏｒａｔｏｒｉｅｓ ＡＢ 接触面上における１つまたは複数の対象用の接触データの決定
RU2012118595A (ru) 2009-10-19 2013-11-27 ФлэтФрог Лэборэторис АБ Извлечение данных касания, представляющих один или несколько предметов на сенсорной поверхности
JP5483996B2 (ja) 2009-10-23 2014-05-07 キヤノン株式会社 補償光学装置、撮像装置、補償光学方法
CN201927010U (zh) 2009-11-12 2011-08-10 北京汇冠新技术股份有限公司 一种触摸屏、触摸系统及光源
US9280237B2 (en) 2009-11-17 2016-03-08 Zetta Research and Development LLC—RPO Series Apparatus and method for receiving a touch input
US20110115748A1 (en) 2009-11-18 2011-05-19 Amlogic Co., Ltd. Infrared Touch Screen
KR101627715B1 (ko) 2009-11-18 2016-06-14 엘지전자 주식회사 터치 패널, 터치 패널의 구동방법 및 터치 패널을 포함하는 디스플레이 장치
KR20110056892A (ko) 2009-11-23 2011-05-31 삼성전자주식회사 Ｌｃｄ 디스플레이장치의 멀티 터치 감지장치 및 이를 이용한 멀티 터치 감지방법
TWI425396B (zh) 2009-11-25 2014-02-01 Coretronic Corp 光學觸控裝置與光學觸控顯示裝置
US8436833B2 (en) 2009-11-25 2013-05-07 Corning Incorporated Methods and apparatus for sensing touch events on a display
TWM379163U (en) 2009-11-26 2010-04-21 Truelight Corp Packaging apparatus for high power and high orientation matrix semiconductor light-emitting devices
GB0921216D0 (en) 2009-12-03 2010-01-20 St Microelectronics Res & Dev Improved touch screen device
WO2011069151A2 (fr) 2009-12-04 2011-06-09 Next Holdings Limited Procédés et systèmes de capteur pour la détection de position
WO2011072588A1 (fr) 2009-12-16 2011-06-23 北京汇冠新技术股份有限公司 Écran tactile infrarouge
US20120256882A1 (en) 2009-12-21 2012-10-11 Flatfrog Laboratories Ab Touch surface with identification of reduced performance
KR101579091B1 (ko) 2010-01-07 2015-12-22 삼성디스플레이 주식회사 터치 위치 검출 방법, 이를 수행하기 위한 터치 위치 검출 장치 및 터치 위치 검출 장치를 포함하는 표시 장치
US8502789B2 (en) 2010-01-11 2013-08-06 Smart Technologies Ulc Method for handling user input in an interactive input system, and interactive input system executing the method
KR101704695B1 (ko) 2010-03-09 2017-02-09 삼성디스플레이 주식회사 터치 위치 검출 방법, 이를 수행하기 위한 터치 위치 검출 장치 및 터치 위치 검출 장치를 포함하는 표시 장치
KR20110103140A (ko) 2010-03-12 2011-09-20 삼성전자주식회사 선택적으로 광을 조사하는 멀티터치 및 근접한 오브젝트 센싱 장치
FR2957718B1 (fr) 2010-03-16 2012-04-20 Commissariat Energie Atomique Diode electroluminescente hybride a rendement eleve
KR101749266B1 (ko) 2010-03-24 2017-07-04 삼성디스플레이 주식회사 터치감지 표시 장치 및 컴퓨터용 기록매체
JP2011227574A (ja) 2010-04-15 2011-11-10 Rohm Co Ltd 演算装置、動き検出装置、電子機器
WO2011130919A1 (fr) 2010-04-23 2011-10-27 Motorola Mobility, Inc. Dispositif électronique et procédé mettant en œuvre une surface de détection tactile
JP5523191B2 (ja) 2010-04-30 2014-06-18 株式会社ジャパンディスプレイ タッチ検出機能付き表示装置
TW201203052A (en) 2010-05-03 2012-01-16 Flatfrog Lab Ab Touch determination by tomographic reconstruction
US8274495B2 (en) 2010-05-25 2012-09-25 General Display, Ltd. System and method for contactless touch screen
US8294168B2 (en) 2010-06-04 2012-10-23 Samsung Electronics Co., Ltd. Light source module using quantum dots, backlight unit employing the light source module, display apparatus, and illumination apparatus
US9158401B2 (en) 2010-07-01 2015-10-13 Flatfrog Laboratories Ab Data processing in relation to a multi-touch sensing apparatus
CN102339168B (zh) 2010-07-21 2013-10-16 北京汇冠新技术股份有限公司 一种触摸屏及其多路采样的方法
US20120019448A1 (en) 2010-07-22 2012-01-26 Nokia Corporation User Interface with Touch Pressure Level Sensing
US8648970B2 (en) 2010-08-02 2014-02-11 Chip Goal Electronics Corporation, Roc Remote controllable video display system and controller and method therefor
KR20120012571A (ko) 2010-08-02 2012-02-10 엘지이노텍 주식회사 광학 터치 스크린 및 그의 조립 방법
US9092089B2 (en) 2010-09-15 2015-07-28 Advanced Silicon Sa Method for detecting an arbitrary number of touches from a multi-touch device
US9411444B2 (en) 2010-10-11 2016-08-09 Flatfrog Laboratories Ab Touch determination by tomographic reconstruction
TWI422908B (zh) 2010-10-12 2014-01-11 Au Optronics Corp 觸控顯示裝置
US9360959B2 (en) 2010-10-12 2016-06-07 Tactonic Technologies, Llc Fusing depth and pressure imaging to provide object identification for multi-touch surfaces
US8654064B2 (en) 2010-10-18 2014-02-18 Samsung Display Co., Ltd. Backlight having blue light emitting diodes and method of driving same
US9092135B2 (en) 2010-11-01 2015-07-28 Sony Computer Entertainment Inc. Control of virtual object using device touch interface functionality
US20120131490A1 (en) 2010-11-22 2012-05-24 Shao-Chieh Lin Touch-controlled device and method for displaying a virtual keyboard on the touch-controlled device thereof
US8503753B2 (en) 2010-12-02 2013-08-06 Kabushiki Kaisha Toshiba System and method for triangular interpolation in image reconstruction for PET
WO2012082055A1 (fr) 2010-12-15 2012-06-21 Flatfrog Laboratories Ab Détermination de contact tactile avec amélioration du signal
EP2466429A1 (fr) 2010-12-16 2012-06-20 FlatFrog Laboratories AB Systèmes IRTF de balayage pour la détection tactile
EP2466428A3 (fr) 2010-12-16 2015-07-29 FlatFrog Laboratories AB Appareil tactile doté de compartiments séparés
US8546741B2 (en) 2011-01-13 2013-10-01 Avago Technologies General Ip (Singapore) Pte. Ltd. Compact optical finger navigation system based on speckles with an optical element including an optical redirection surface
US8635560B2 (en) 2011-01-21 2014-01-21 Blackberry Limited System and method for reducing power consumption in an electronic device having a touch-sensitive display
EP2479642B1 (fr) 2011-01-21 2017-08-16 BlackBerry Limited Système et procédé de réduction de la consommation d'énergie dans un dispositif électronique disposant d'un affichage tactile
AU2012212715A1 (en) 2011-02-02 2013-04-18 Flatfrog Laboratories Ab Optical incoupling for touch-sensitive systems
US8619062B2 (en) 2011-02-03 2013-12-31 Microsoft Corporation Touch-pressure sensing in a display panel
US9201520B2 (en) 2011-02-11 2015-12-01 Microsoft Technology Licensing, Llc Motion and context sharing for pen-based computing inputs
US8624858B2 (en) 2011-02-14 2014-01-07 Blackberry Limited Portable electronic device including touch-sensitive display and method of controlling same
US8912905B2 (en) 2011-02-28 2014-12-16 Chon Meng Wong LED lighting system
US9411464B2 (en) * 2011-03-09 2016-08-09 Flatfrog Laboratories Ab Touch determination with signal compensation
TW201239710A (en) 2011-03-29 2012-10-01 Genius Electronic Optical Co Ltd Optical touch system
KR20140022843A (ko) 2011-04-19 2014-02-25 퍼셉티브 픽셀 인코포레이티드 터치 감지를 위한 광학 필터형 센서인픽셀 기술
US8558788B2 (en) 2011-04-29 2013-10-15 Hewlett-Packard Development Company, L.P. Diffusing light of a laser
EP2707765A1 (fr) 2011-05-13 2014-03-19 3M Innovative Properties Company Afficheur transmissif rétroéclairé comportant une couche d'extraction de lumière à indice variable
EP2712435A4 (fr) 2011-05-16 2015-03-18 Flatfrog Lab Ab Dispositif et procédé pour déterminer une réduction de performance d'un appareil tactile
GB201110218D0 (en) 2011-06-16 2011-08-03 St Microelectronics Res & Dev Optical navigation device
JP5453351B2 (ja) 2011-06-24 2014-03-26 株式会社Ｎｔｔドコモ 移動情報端末、操作状態判定方法、プログラム
US8884900B2 (en) 2011-07-13 2014-11-11 Flatfrog Laboratories Ab Touch-sensing display apparatus and electronic device therewith
US8963886B2 (en) 2011-07-13 2015-02-24 Flatfrog Laboratories Ab Touch-sensing display panel
WO2013014534A2 (fr) 2011-07-22 2013-01-31 Owen Drumm Coupleur optique destiné à être utilisé dans un dispositif tactile optique
US9075561B2 (en) 2011-07-29 2015-07-07 Apple Inc. Systems, methods, and computer-readable media for managing collaboration on a virtual work of art
WO2013062471A2 (fr) 2011-10-27 2013-05-02 Flatfrog Laboratories Ab Détermination tactile par reconstruction tomographique
US8959435B2 (en) 2011-08-23 2015-02-17 Garmin Switzerland Gmbh System and methods for detecting debris on a touchscreen system display screen
KR101862123B1 (ko) 2011-08-31 2018-05-30 삼성전자 주식회사 휴대단말기의 입력 장치 및 방법
US9389732B2 (en) 2011-09-09 2016-07-12 Flatfrog Laboratories Ab Light coupling structures for optical touch panels
TW201329821A (zh) 2011-09-27 2013-07-16 Flatfrog Lab Ab 用於觸控決定的影像重建技術
US9019240B2 (en) 2011-09-29 2015-04-28 Qualcomm Mems Technologies, Inc. Optical touch device with pixilated light-turning features
TW201333787A (zh) 2011-10-11 2013-08-16 Flatfrog Lab Ab 觸控系統中改良的多點觸控偵測
US20130106709A1 (en) 2011-10-28 2013-05-02 Martin John Simmons Touch Sensor With User Identification
JP5846631B2 (ja) 2011-11-02 2016-01-20 株式会社エンプラス 導光板およびこれを備えた光学系
US9582178B2 (en) 2011-11-07 2017-02-28 Immersion Corporation Systems and methods for multi-pressure interaction on touch-sensitive surfaces
US20130125016A1 (en) 2011-11-11 2013-05-16 Barnesandnoble.Com Llc System and method for transferring content between devices
JP2015503159A (ja) 2011-11-28 2015-01-29 コーニング インコーポレイテッド 堅牢な光学式タッチスクリーンシステム及び、平面透明シートの使用方法
US9823781B2 (en) 2011-12-06 2017-11-21 Nri R&D Patent Licensing, Llc Heterogeneous tactile sensing via multiple sensor types
US9927920B2 (en) 2011-12-16 2018-03-27 Flatfrog Laboratories Ab Tracking objects on a touch surface
EP2791763B1 (fr) 2011-12-16 2018-10-31 FlatFrog Laboratories AB Suivi d'objets sur une surface tactile
WO2013090709A1 (fr) 2011-12-16 2013-06-20 Hospira, Inc. Système permettant de surveiller et d'administrer un médicament à un patient et méthode l'utilisant pour réduire les risques associés à une thérapie automatisée
EP2673697A4 (fr) 2011-12-16 2014-07-02 Flatfrog Lab Ab Suivi d'objets sur une surface tactile
JP5296185B2 (ja) 2011-12-21 2013-09-25 シャープ株式会社 タッチセンサシステム
US9639210B2 (en) 2011-12-22 2017-05-02 Flatfrog Laboratories Ab Touch determination with interaction compensation
US20130181953A1 (en) 2012-01-13 2013-07-18 Microsoft Corporation Stylus computing environment
TW201331796A (zh) * 2012-01-20 2013-08-01 Univ Nat Taipei Technology 能根據環境光線變化來最佳化觸控亮點之多點觸控系統及其方法
US9250794B2 (en) 2012-01-23 2016-02-02 Victor Manuel SUAREZ ROVERE Method and apparatus for time-varying tomographic touch imaging and interactive system using same
US9811209B2 (en) 2012-02-21 2017-11-07 Flatfrog Laboratories Ab Touch determination with improved detection of weak interactions
TWI439907B (zh) 2012-02-29 2014-06-01 Pixart Imaging Inc 光學觸控裝置及其偵測方法
WO2013133756A1 (fr) 2012-03-09 2013-09-12 Flatfrog Laboratories Ab Tomographie efficace pour détermination de contact tactile
US9760233B2 (en) 2012-03-09 2017-09-12 Flatfrog Laboratories Ab Efficient tomographic processing for touch determination
US20130241887A1 (en) 2012-03-14 2013-09-19 Texas Instruments Incorporated Detecting and Tracking Touch on an Illuminated Surface
US8928590B1 (en) 2012-04-03 2015-01-06 Edge 3 Technologies, Inc. Gesture keyboard method and apparatus
US9448066B2 (en) 2012-04-17 2016-09-20 Massachusetts Institute Of Technology Methods and apparatus for jammable HCI interfaces
US9904457B2 (en) 2012-04-25 2018-02-27 Nokia Technologies Oy Causing display of a three dimensional graphical user interface with dynamic selectability of items
WO2013165305A2 (fr) 2012-05-02 2013-11-07 Flatfrog Laboratories Ab Détection d'objets dans des systèmes tactiles
US9626018B2 (en) 2012-05-02 2017-04-18 Flatfrog Laboratories Ab Object detection in touch systems
US10168835B2 (en) 2012-05-23 2019-01-01 Flatfrog Laboratories Ab Spatial resolution in touch displays
EP2852879A4 (fr) 2012-05-23 2016-02-17 Flatfrog Lab Ab Appareil tactile avec résolution spatiale améliorée
WO2013176615A2 (fr) 2012-05-23 2013-11-28 Flatfrog Laboratories Ab Appareil tactile à résolution spatiale améliorée
EP2852878A4 (fr) 2012-05-23 2016-02-17 Flatfrog Lab Ab Appareil tactile à résolution spatiale améliorée
US9405382B2 (en) 2012-07-24 2016-08-02 Rapt Ip Limited Augmented optical waveguide for use in an optical touch sensitive device
WO2014017973A1 (fr) 2012-07-24 2014-01-30 Flatfrog Laboratories Ab Couplage optique dans des systèmes de détection tactile faisant appel à un élément à transmission diffuse
US9886116B2 (en) 2012-07-26 2018-02-06 Apple Inc. Gesture and touch input detection through force sensing
US20140036203A1 (en) 2012-07-31 2014-02-06 Apple Inc. Light mixture for a display utilizing quantum dots
US20140063853A1 (en) 2012-08-29 2014-03-06 Flex Lighting Ii, Llc Film-based lightguide including a wrapped stack of input couplers and light emitting device including the same
US9086763B2 (en) 2012-09-11 2015-07-21 Flatfrog Laboratories Ab Touch force estimation in an FTIR-based projection-type touch-sensing apparatus
US9891759B2 (en) 2012-09-28 2018-02-13 Apple Inc. Frustrated total internal reflection and capacitive sensing
US9557846B2 (en) 2012-10-04 2017-01-31 Corning Incorporated Pressure-sensing touch system utilizing optical and capacitive systems
US20140210770A1 (en) 2012-10-04 2014-07-31 Corning Incorporated Pressure sensing touch systems and methods
US9229576B2 (en) 2012-10-09 2016-01-05 Stmicroelectronics Asia Pacific Pte Ltd Apparatus and method for preventing false touches in touch screen systems
CN203224848U (zh) 2012-10-11 2013-10-02 华映视讯（吴江）有限公司 一种触控显示模块
US8694791B1 (en) 2012-10-15 2014-04-08 Google Inc. Transitioning between access states of a computing device
US20140139467A1 (en) 2012-11-21 2014-05-22 Princeton Optronics Inc. VCSEL Sourced Touch Screen Sensor Systems
WO2014086084A1 (fr) 2012-12-05 2014-06-12 成都吉锐触摸技术股份有限公司 Écran tactile infrarouge
US20140160762A1 (en) 2012-12-07 2014-06-12 GE Lighting Solutions, LLC Diffuser element and lighting device comprised thereof
WO2014098742A1 (fr) 2012-12-17 2014-06-26 Flatfrog Laboratories Ab Appareil tactile à couplage latéral
US20150324028A1 (en) 2012-12-17 2015-11-12 Flatfrog Laboratories Ab Optical coupling of light into touch-sensing systems
US20150331545A1 (en) 2012-12-17 2015-11-19 FlatFrog Laboraties AB Laminated optical element for touch-sensing systems
WO2014098743A1 (fr) 2012-12-17 2014-06-26 Flatfrog Laboratories Ab Couplage optique dans des systèmes tactiles
WO2014098744A1 (fr) 2012-12-20 2014-06-26 Flatfrog Laboratories Ab Améliorations apportées à des systèmes tactiles optiques d'un type de projection basés sur une réflexion interne total (tir)
US9817514B2 (en) 2012-12-27 2017-11-14 Flatfrog Laboratories Ab Touch-sensing apparatus and a method for enabling control of a touch-sensing apparatus by an external device
US9223442B2 (en) 2013-01-10 2015-12-29 Samsung Display Co., Ltd. Proximity and touch sensing surface for integration with a display
WO2014112913A1 (fr) 2013-01-16 2014-07-24 Flatfrog Laboratories Ab Panneau d'affichage tactile
CN104956298A (zh) 2013-01-30 2015-09-30 福建科创光电有限公司 单片式电容触摸屏及其制作方法
US9910527B2 (en) 2013-02-15 2018-03-06 Flatfrog Laboratories Ab Interpretation of pressure based gesture
US20140237408A1 (en) 2013-02-15 2014-08-21 Flatfrog Laboratories Ab Interpretation of pressure based gesture
US20140237401A1 (en) 2013-02-15 2014-08-21 Flatfrog Laboratories Ab Interpretation of a gesture on a touch sensing device
US20140237422A1 (en) 2013-02-15 2014-08-21 Flatfrog Laboratories Ab Interpretation of pressure based gesture
CN203189466U (zh) 2013-03-10 2013-09-11 常州市龙春针织机械科技有限公司 轴向锁紧装置
KR102052977B1 (ko) 2013-03-11 2019-12-06 삼성전자 주식회사 다중 입력 제어 방법 및 시스템과 이를 지원하는 전자 장치
US9785259B2 (en) 2013-03-11 2017-10-10 Barnes & Noble College Booksellers, Llc Stylus-based slider functionality for UI control of computing device
KR20140114913A (ko) 2013-03-14 2014-09-30 삼성전자주식회사 사용자 기기의 센서 운용 방법 및 장치
US9158411B2 (en) 2013-07-12 2015-10-13 Tactual Labs Co. Fast multi-touch post processing
KR102213485B1 (ko) * 2013-03-15 2021-02-08 텍추얼 랩스 컴퍼니 사용자 식별 기술을 갖는 고속 멀티 터치 센서
WO2014168568A1 (fr) 2013-04-11 2014-10-16 Flatfrog Laboratories Ab Ensemble de circuit imprimé et système tactile comprenant cet ensemble
WO2014168567A1 (fr) 2013-04-11 2014-10-16 Flatfrog Laboratories Ab Traitement tomographique de détection de contact
US20160070416A1 (en) 2013-04-11 2016-03-10 Flatfrog Laboratories Ab A Coupling Arrangement, A Panel and a Touch Sensitive System
US10187520B2 (en) 2013-04-24 2019-01-22 Samsung Electronics Co., Ltd. Terminal device and content displaying method thereof, server and controlling method thereof
WO2014188973A1 (fr) 2013-05-21 2014-11-27 シャープ株式会社 Système de panneau tactile et dispositif électronique
US9256290B2 (en) 2013-07-01 2016-02-09 Blackberry Limited Gesture detection using ambient light sensors
TW201502607A (zh) 2013-07-04 2015-01-16 Era Optoelectronics Inc 使光線被導入導光板進行內全反射的結構
WO2015005847A1 (fr) 2013-07-12 2015-01-15 Flatfrog Laboratories Ab Mode de détection partielle
WO2015009317A1 (fr) 2013-07-19 2015-01-22 Hewlett-Packard Development Company, Lp Panneau guide de lumière doté de réseaux de diffraction
US9366565B2 (en) 2013-08-26 2016-06-14 Flatfrog Laboratories Ab Light out-coupling arrangement and a touch sensitive system comprising the out-coupling arrangement
KR20150026044A (ko) 2013-08-30 2015-03-11 엘지디스플레이 주식회사 광학 시트, 이를 포함하는 백라이트 유닛 및 표시장치
CN104626057B (zh) 2013-11-06 2016-06-01 纬创资通股份有限公司 用于触控显示装置组装的辅助工具及使用方法
WO2015076731A1 (fr) 2013-11-22 2015-05-28 Flatfrog Laboratories Ab Appareil tactile présentant une résolution spatiale améliorée
WO2015108478A2 (fr) * 2014-01-16 2015-07-23 Flatfrog Laboratories Ab Panneau d'affichage oled
WO2015108479A1 (fr) * 2014-01-16 2015-07-23 Flatfrog Laboratories Ab Couplage de lumière dans les systèmes tactiles optiques basés sur la tir
US10126882B2 (en) * 2014-01-16 2018-11-13 Flatfrog Laboratories Ab TIR-based optical touch systems of projection-type
WO2015108477A1 (fr) 2014-01-16 2015-07-23 Flatfrog Laboratories Ab Écran tactile lcd à points quantiques
US20150271481A1 (en) 2014-03-21 2015-09-24 Christie Digital Systems Usa, Inc. System for forming stereoscopic images
US20150286698A1 (en) 2014-04-07 2015-10-08 Microsoft Corporation Reactive digital personal assistant
US9552473B2 (en) 2014-05-14 2017-01-24 Microsoft Technology Licensing, Llc Claiming data from a virtual whiteboard
US9864470B2 (en) 2014-05-30 2018-01-09 Flatfrog Laboratories Ab Enhanced interaction touch system
US10867149B2 (en) 2014-06-12 2020-12-15 Verizon Media Inc. User identification through an external device on a per touch basis on touch sensitive devices
EP3161594A4 (fr) 2014-06-27 2018-01-17 FlatFrog Laboratories AB Détection de contamination de surface
US9626020B2 (en) 2014-09-12 2017-04-18 Microsoft Corporation Handedness detection from touch input
US20160216844A1 (en) 2015-01-28 2016-07-28 Flatfrog Laboratories Ab Arrangement For a Touch Sensitive Apparatus
WO2016122385A1 (fr) 2015-01-28 2016-08-04 Flatfrog Laboratories Ab Trames de quarantaine tactiles dynamiques
US10318074B2 (en) 2015-01-30 2019-06-11 Flatfrog Laboratories Ab Touch-sensing OLED display with tilted emitters
EP3256936A4 (fr) 2015-02-09 2018-10-17 FlatFrog Laboratories AB Système tactile optique comprenant des moyens de projection et de détection de faisceaux de lumière au-dessus et à l'intérieur d'un panneau de transmission
CN107250855A (zh) 2015-03-02 2017-10-13 平蛙实验室股份公司 用于光耦合的光学部件
KR102394204B1 (ko) 2015-03-02 2022-05-09 가부시키가이샤 와코무 액티브 정전 스타일러스, 센서 컨트롤러, 이것들을 구비하는 시스템 및 이것들에 의해 실행되는 방법
EP3291725B1 (fr) * 2015-05-07 2024-07-24 Stryker Corporation Procédés et systèmes pour une imagerie laser à granularité de tissu à l'aide d'un capteur d'image couleur
CN205015574U (zh) 2015-10-14 2016-02-03 深圳市联合盛电子有限公司 触摸屏与液晶模组贴合治具组
CN105224138B (zh) 2015-10-22 2019-04-19 京东方科技集团股份有限公司 悬浮触控显示装置
EP3414980A4 (fr) 2016-02-12 2019-08-14 FlatFrog Laboratories AB Outils d'assemblage pour panneau et système de détection tactile
WO2018106172A1 (fr) 2016-12-07 2018-06-14 Flatfrog Laboratories Ab Véritable id de stylo actif
EP3602258B1 (fr) 2017-03-22 2024-05-08 FlatFrog Laboratories AB Différenciation de stylo pour écrans tactiles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090091554A1 (en) * 2007-10-05 2009-04-09 Microsoft Corporation Correcting for ambient light in an optical touch-sensitive device
US20110084939A1 (en) * 2009-10-12 2011-04-14 Garmin International, Inc. Infrared touchscreen electronics
US20130135258A1 (en) * 2011-11-28 2013-05-30 Jeffrey Stapleton King Optical Touch-Screen Systems And Methods Using A Planar Transparent Sheet
WO2013115710A2 (fr) * 2012-01-31 2013-08-08 Flatfrog Laboratories Ab Contrôle et correction de performances dans un appareil tactile
WO2014104967A1 (fr) * 2012-12-27 2014-07-03 Flatfrog Laboratories Ab Procédé et appareil pour détecter une lumière ambiante visible

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11182023B2 (en) 2015-01-28 2021-11-23 Flatfrog Laboratories Ab Dynamic touch quarantine frames
US11029783B2 (en) 2015-02-09 2021-06-08 Flatfrog Laboratories Ab Optical touch system comprising means for projecting and detecting light beams above and inside a transmissive panel
US11301089B2 (en) 2015-12-09 2022-04-12 Flatfrog Laboratories Ab Stylus identification
US10775937B2 (en) 2015-12-09 2020-09-15 Flatfrog Laboratories Ab Stylus identification
US10775935B2 (en) 2016-12-07 2020-09-15 Flatfrog Laboratories Ab Touch device
US12189906B2 (en) 2016-12-07 2025-01-07 Flatfrog Laboratories Ab Touch device
US11579731B2 (en) 2016-12-07 2023-02-14 Flatfrog Laboratories Ab Touch device
US11281335B2 (en) 2016-12-07 2022-03-22 Flatfrog Laboratories Ab Touch device
US12524117B2 (en) 2017-02-06 2026-01-13 Flatfrog Laboratories Ab Optical coupling in touch-sensing systems
US12175044B2 (en) 2017-02-06 2024-12-24 Flatfrog Laboratories Ab Optical coupling in touch-sensing systems
US11740741B2 (en) 2017-02-06 2023-08-29 Flatfrog Laboratories Ab Optical coupling in touch-sensing systems
US11474644B2 (en) 2017-02-06 2022-10-18 Flatfrog Laboratories Ab Optical coupling in touch-sensing systems
US11099688B2 (en) 2017-03-22 2021-08-24 Flatfrog Laboratories Ab Eraser for touch displays
US11016605B2 (en) 2017-03-22 2021-05-25 Flatfrog Laboratories Ab Pen differentiation for touch displays
US10606414B2 (en) 2017-03-22 2020-03-31 Flatfrog Laboratories Ab Eraser for touch displays
US11269460B2 (en) 2017-03-28 2022-03-08 Flatfrog Laboratories Ab Touch sensing apparatus and method for assembly
US10739916B2 (en) 2017-03-28 2020-08-11 Flatfrog Laboratories Ab Touch sensing apparatus and method for assembly
US10845923B2 (en) 2017-03-28 2020-11-24 Flatfrog Laboratories Ab Touch sensing apparatus and method for assembly
US11281338B2 (en) 2017-03-28 2022-03-22 Flatfrog Laboratories Ab Touch sensing apparatus and method for assembly
US11650699B2 (en) 2017-09-01 2023-05-16 Flatfrog Laboratories Ab Optical component
US12086362B2 (en) 2017-09-01 2024-09-10 Flatfrog Laboratories Ab Optical component
US11256371B2 (en) 2017-09-01 2022-02-22 Flatfrog Laboratories Ab Optical component
US12524116B2 (en) 2018-03-05 2026-01-13 Flatfrog Laboratories Ab Detection line broadening
US11567610B2 (en) 2018-03-05 2023-01-31 Flatfrog Laboratories Ab Detection line broadening
US12055969B2 (en) 2018-10-20 2024-08-06 Flatfrog Laboratories Ab Frame for a touch-sensitive device and tool therefor
US11943563B2 (en) 2019-01-25 2024-03-26 FlatFrog Laboratories, AB Videoconferencing terminal and method of operating the same
US12056316B2 (en) 2019-11-25 2024-08-06 Flatfrog Laboratories Ab Touch-sensing apparatus
US12461630B2 (en) 2019-11-25 2025-11-04 Flatfrog Laboratories Ab Touch-sensing apparatus
US12282653B2 (en) 2020-02-08 2025-04-22 Flatfrog Laboratories Ab Touch apparatus with low latency interactions
US11893189B2 (en) 2020-02-10 2024-02-06 Flatfrog Laboratories Ab Touch-sensing apparatus

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